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Base Layers

22 Products

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Select 2 to 5 items to compare in detail.
97
in Men's Base Layers

Patagonia Patagonia Men's Capilene® Midweight Baselayer Crewneck

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Mint odor control keeps things fresh. Made in a Fair Trade Certified™ factory.

Scored Product Attributes

97
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Polyester

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.

This CERT verifies that products meet Fair Trade standards, ensuring ethical sourcing, fair wages, safe working conditions and environmental sustainability throughout the supply chain.
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Company participates in community outreach or activism programs.

The 1% for the Planet® Impact Fund at National Philanthropic Trust offers a unique philanthropic opportunity to drive positive change for our planet and future generations.
icon representing Environmental criteria factor Enviro

This brand uses renewable energy sources such as solar, wind, or hydro power to run its operations.

This brand offers repair services or programs to extend the life of its products and reduce waste.

This brand supports initiatives to protect water resources and reduce water consumption.
icon representing Governance criteria factor Governance

A label that describes what it takes to make an individual product. More than just a materials listing, this includes water usage, energy consumption, cost breakdown, carbon footprint, certifications, and maybe more
icon representing item origin Origins
Made in Sri Lanka
93
in Men's Base Layers

Norrøna Norrna pureUll Wool Longs for men

Premium 100% merino wool baselayer longs for men. Perfect for all outdoor activities, and also suitable for everyday use because of its clean design.

Scored Product Attributes

93
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that textiles and textile products are tested for harmful substances to ensure they meet strict safety limits for chemicals like pesticides, heavy metals and formaldehyde throughout the production process.

This CERT verifies that wool is sourced from farms that follow humane treatment of sheep and sustainable land management practices, ensuring animal welfare and environmental responsibility throughout the supply chain.
Warranty: Over 3-5 Year

Good To Know - Brand Attributes

icon representing item origin Origins
Made in Lithuania
87
in Men's Base Layers

PAKA Apparel Men's Baselayer

Our blend of alpaca fiber and modal creates a liquid, form fitting, lightweight baselayer for everything that requires a little extra comfort, warmth, and flexibility.

Scored Product Attributes

87
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Alpaca Fiber

Modal Fabric

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.

This CERT verifies that textiles and textile products are tested for harmful substances to ensure they meet strict safety limits for chemicals like pesticides, heavy metals and formaldehyde throughout the production process.
Warranty: 20 - 34 Day
73
in Men's Base Layers

ORTOVOX ORTOVOX 185 ROCKNWOOL SHORT PANTS M | 3/4 underpants

ORTOVOX 3/4 underpants 185 ROCKNWOOL SHORT PANTS M. Our 185 ROCK'N'WOOL SHORT PANTS for men are extra soft and keep you warm when the weather gets cold and the going gets tough thanks to their fine merino wool. Freeriding starts with the first layer of clothing, as this layer is crucial for functionality. The short pants is made of 100% fine merino wool with a fineness of 19 microns. It feels comfortable on the skin and ensures an optimum climate thanks to its temperature and moisture-regulating qualities. Our classic also has a brand new look: The split design and fresh colors with multi-colored twisted yarn and on-trend waistband reflect the multi-faceted nature of your winter adventures. The 185 ROCK'N'WOOL SHORT PANTS for men are an absolute must for any freeride!

Scored Product Attributes

73
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

PFC Free

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that clothing brands meet the standards set by Fair Wear Foundation, focusing on fair labor practices, safe working conditions and workers' rights throughout the garment supply chain.

This CERT verifies that wool is sourced from farms that follow humane treatment of sheep and sustainable land management practices, ensuring animal welfare and environmental responsibility throughout the supply chain.
Warranty: Over 1 - 2 Year

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand participates in carbon offset programs to neutralize its carbon emissions.
73
in Men's Base Layers

ORTOVOX ORTOVOX 185 ROCK'N'WOOL LONG SLEEVE M | Base Layer Long

ORTOVOX Base Layer Long 185 ROCK'N'WOOL LONG SLEEVE M. Our 185 ROCK'N'WOOL LONG SLEEVE for men is extra soft and keeps you warm when the weather gets cold and the going gets tough thanks to its fine merino wool. Freeriding starts with the first layer of clothing, as this layer is crucial for functionality. The longsleeve is made of 100% fine merino wool with a fineness of 19 microns. It feels comfortable on the skin and ensures an optimum climate thanks to its temperature and moisture-regulating qualities. This classic also scores with its fresh new look: The split, asymmetrical design and bright colors with multi-colored twisted yarn reflect the multi-faceted nature of your winter adventures. The 185 ROCK'N'WOOL LONG SLEEVE for men is a must-have on the mountain!

Scored Product Attributes

73
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

PFC Free

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that clothing brands meet the standards set by Fair Wear Foundation, focusing on fair labor practices, safe working conditions and workers' rights throughout the garment supply chain.

This CERT verifies that wool is sourced from farms that follow humane treatment of sheep and sustainable land management practices, ensuring animal welfare and environmental responsibility throughout the supply chain.
Warranty: Over 1 - 2 Year

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand participates in carbon offset programs to neutralize its carbon emissions.
73
in Men's Base Layers

ORTOVOX ORTOVOX 185 ROCKNWOOL SHORT SLEEVE M | Short sleeve |

ORTOVOX Short sleeve | tank tops 185 ROCKNWOOL SHORT SLEEVE M. Our 185 ROCK'N'WOOL SHORT SLEEVE for men is extra soft and keeps you warm when the weather gets cold and the going gets tough thanks to its fine merino wool. Freeriding starts with the first layer of clothing, as this layer is crucial for functionality. The shortsleeve is made of 100% fine merino wool with a fineness of 19 microns. It feels comfortable on the skin and ensures an optimum climate thanks to its temperature and moisture-regulating qualities. This classic also scores with its fresh new look: The split, asymmetrical design and bright colors with multi-colored twisted yarn reflect the multi-faceted nature of your winter adventures. The 185 ROCK'N'WOOL SHORT SLEEVE for men is a must-have on the mountain!

Scored Product Attributes

73
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

PFC Free

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that clothing brands meet the standards set by Fair Wear Foundation, focusing on fair labor practices, safe working conditions and workers' rights throughout the garment supply chain.

This CERT verifies that wool is sourced from farms that follow humane treatment of sheep and sustainable land management practices, ensuring animal welfare and environmental responsibility throughout the supply chain.
Warranty: Over 1 - 2 Year

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand participates in carbon offset programs to neutralize its carbon emissions.
69
in Men's Base Layers

Houdini Sportswear M's Drop Knee Power Tights | Houdini Sportswear

Fleece tights with legs in Polartec Power Stretch Pro. Use them next to skin or layer over your base layer for extra warmth.

Scored Product Attributes

69
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that textiles are produced with minimal environmental impact, focusing on safe chemical use, resource efficiency and worker safety as set by Bluesign.
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Environmental criteria factor Enviro

This brand offers return, trade-in or buy-back programs for its own or industry products to encourage product reuse and reduce waste.

This brand offers repair services or programs to extend the life of its products and reduce waste.

Company that is taking steps to eliminate all plastics in their production and packaging.

This brand allows customers to rent items instead of purchasing them outright, promoting sustainable consumption and reducing waste.
51
in Men's Base Layers

Endeavor Endeavor Scout Thermal Top

The Scout Thermal is our perfect thermal layering system. The top is a tailored but long fit made of cotton like moisture wicking fabric we call Drytech. A brushed soft back is luxurious against your skin while the tight knit construction ensures sweat is quickly wicked so you stay warm and dry. Thumbhole cuffs ensure

Scored Product Attributes

51
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.
Warranty: 1 year
51
in Men's Base Layers

Endeavor Endeavor Scout Thermal Bottom

The Scout Thermal is our perfect thermal layering system. The bottom is a tailored fit made of cotton like moisture wicking fabric we call Drytech. A brushed soft back is luxurious against your skin while the tight knit construction ensures sweat is quickly wicked so you stay warm and dry. Knee re-enforcements and a co

Scored Product Attributes

51
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.
Warranty: 1 year
48
in Men's Base Layers

KOUP Moisture Wicking Shirt | Men's Base Layer | Koup

Moisture Wicking Shirt by Koup, the cinnamon shirt is made with a stretchy, sweat-wicking texture that allows you to move without limitations, Shop now for the best quality t-shirts.

Scored Product Attributes

48
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Plastic

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.
Warranty: 1 - 19 Day
48
in Men's Base Layers

KOUP Men's Base Layer Hoodie

Cinnamon Base Layer Hoodie | Brand New Way to Stay Fresh EachHoodie is made from on average 8 recycled plastic bottles and cinnamon. Perfect for wearing on its own or as a layer, thecinnamonBase Layer Hoodie is made with stretchy, sweat-wicking fabric that lets you move without restrictions, flat seams move smoothly

Scored Product Attributes

48
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Plastic

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT recognizes businesses that meet high standards of social and environmental performance, accountability and transparency as certified by B Lab.
Warranty: 1 - 19 Day
46
in Men's Base Layers

Houdini Sportswear M's Activist Turtleneck | Houdini Sportswear

Light and warm merino wool turtleneck for men. Activist Turtleneck is a comfortable and versatile base layer for skiing, hiking or any outdoor adventure all year around.

Scored Product Attributes

46
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that products meet the European Union's environmental standards, focusing on sustainability, reduced environmental impact and resource efficiency throughout the product's lifecycle.
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Environmental criteria factor Enviro

This brand offers return, trade-in or buy-back programs for its own or industry products to encourage product reuse and reduce waste.

This brand offers repair services or programs to extend the life of its products and reduce waste.

Company that is taking steps to eliminate all plastics in their production and packaging.

This brand allows customers to rent items instead of purchasing them outright, promoting sustainable consumption and reducing waste.
39
in Men's Base Layers

Páramo Pramo Clothing | MEN'S GRID LONG JOHNS

Scored Product Attributes

39
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications

This CERT verifies that organizations adhere to the World Fair Trade Organization's principles, ensuring fair wages, good working conditions and environmental sustainability throughout the supply chain.
Warranty: Lifetime
16
in Men's Base Layers

Outdoor Research Men's Alpine Onset Merino 150 Crew | Outdoor Research

The Alpine Onset Merino 150 Base Layers feature a newly updated, softer, non-mulesed merino wool blend and UPF 30 sun protection for stretchy, moisture-wicking, breathable warmth that's naturally odor-resistant for extended, multi-day wear between washings.

Scored Product Attributes

16
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

UPF 30

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand uses renewable energy sources such as solar, wind, or hydro power to run its operations.
icon representing item origin Origins
Made in Vietnam
16
in Men's Base Layers

Outdoor Research Women's Alpine Onset Merino 150 Bottoms-Plus | Outdoor Research

The Alpine Onset Merino 150 Plus Base Layers feature a newly updated, softer, non-mulesed merino wool blend and UPF 30 sun protection for stretchy, moisture-wicking, breathable warmth that's naturally odor-resistant for extended, multi-day wear between washings.

Scored Product Attributes

16
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

UPF 30

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand uses renewable energy sources such as solar, wind, or hydro power to run its operations.
icon representing item origin Origins
Made in Vietnam
16
in Men's Base Layers

Outdoor Research Men's Alpine Onset Merino 150 Bottoms | Outdoor Research

The Alpine Onset Merino 150 Base Layers feature a newly updated, softer, non-mulesed merino wool blend and UPF 30 sun protection for stretchy, moisture-wicking, breathable warmth that's naturally odor-resistant for extended, multi-day wear between washings.

Scored Product Attributes

16
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

UPF 30

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand uses renewable energy sources such as solar, wind, or hydro power to run its operations.
icon representing item origin Origins
Made in Vietnam
16
in Men's Base Layers

Outdoor Research Men's Alpine Onset Merino 150 Hoodie | Outdoor Research

The Alpine Onset Merino 150 Base Layers feature a newly updated, softer, non-mulesed merino wool blend and UPF 30 sun protection for stretchy, moisture-wicking, breathable warmth that's naturally odor-resistant for extended, multi-day wear between washings.

Scored Product Attributes

16
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

UPF 30

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: Lifetime

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Standards ensuring that animal derived materials used in the products come from animals that were treated humanely
icon representing Environmental criteria factor Enviro

This brand uses renewable energy sources such as solar, wind, or hydro power to run its operations.
icon representing item origin Origins
Made in Vietnam
10
in Men's Base Layers

L.L.Bean Men's L.L.Bean Heavyweight Base Layer Crew, Long Sleeve | Base Layers at L.L.Bean

Find the best Men's L.L.Bean Heavyweight Base Layer Crew, Long Sleeve at L.L.Bean. Our high quality null Base Layers are thoughtfully designed and built to last season after season.

Scored Product Attributes

10
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Repreve Polyester

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: 1 year

Good To Know - Brand Attributes

icon representing Social criteria factor Social

This brand provides discounts for active military members and veterans.

This brand supports Diversity, Equity, and Inclusion (DEI) initiatives, promoting a diverse and inclusive workplace and community.

This brand offers discounts for teachers and educators to support their contributions to education.

This brand offers discounts for students.
10
in Men's Base Layers

L.L.Bean Men's L.L.Bean Midweight Base Layer Pants, Print | Base Layers at L.L.Bean

Find the best Men's L.L.Bean Midweight Base Layer Pants, Print at L.L.Bean. Our high quality null Base Layers are thoughtfully designed and built to last season after season.

Scored Product Attributes

10
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Polyester

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: 1 year

Good To Know - Brand Attributes

icon representing Social criteria factor Social

This brand provides discounts for active military members and veterans.

This brand supports Diversity, Equity, and Inclusion (DEI) initiatives, promoting a diverse and inclusive workplace and community.

This brand offers discounts for teachers and educators to support their contributions to education.

This brand offers discounts for students.
6
in Men's Base Layers

Smartwool Men's Merino 250 Base Layer Bottom | Smartwool

Experience benefits of Merino 250 men's base layer pants. Heavy Merino wool blend, enhanced fitting for functionality in cold weather. Free returns.

Scored Product Attributes

6
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Merino Wool

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: Over 1 - 2 Year

Good To Know - Brand Attributes

icon representing item origin Origins
Made in Vietnam
4
in Men's Base Layers

NRS NRS Men's Lightweight Shirt

A longtime favorite of paddlers, the NRS Men's Lightweight Shirt is the perfect base layer. Designed for comfort under technical outerwear to provide midweight insulation, while worn alone, it offers maximum sun protection.

Scored Product Attributes

4
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Polyester

UPF 50+

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: 20 - 34 Day

Good To Know - Brand Attributes

icon representing Governance criteria factor Governance

This brand is employee-owned, ensuring that the business is run with shared responsibility and benefits among its employees.
icon representing item origin Origins
Designed in Moscow, Idaho, United States of America
3
in Men's Base Layers

Outdoor Voices Waffle Longsleeve

A toasty base layer for doing granola things. Made in our sustainable Sweatee Waffle, featuring cozy Raglan sleeves and drirelease technology to optimize sweat-wicking properties and cut down on drying time.

Scored Product Attributes

3
icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

Recycled Polyester

icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
Warranty: 45 - 90 Day

Good To Know - Brand Attributes

icon representing Social criteria factor Social

Company participates in community outreach or activism programs.

This brand offers discounts for students.
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