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    Base Layers

    65 Products

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    6
    in Men's Base Layers

    Brynje Hi-Tech Merino Wool Thermal Underwear | Unisex Wool Base Layer Zip Polo

    $179.95 Shop now launch
    View description
    Perfect merino wool base layer for winter expeditions. Best performance in wicking & insulation. Explore in confidence with the leader in thermal clothing.

    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: 1 year
    6
    in Men's Base Layers

    Meriwool MEN'S MERINO 190 BASE LAYER SHORT SLEEVE POLO SHIRT

    $54.99 Shop now launch
    View description
    Whether you're out on the golf course our in the office, our Mens Merino Wool Polo T Shirt is sure to keep you dry and comfortable! Shop Now!

    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: 1 year
    6
    in Men's Base Layers

    L.L.Bean Men's No Fly Zone Bug Skin Base Layer Top, Long-Sleeve | Base Layers at L.L.Bean

    $49.95 Shop now launch
    View description
    Find the best Men's No Fly Zone Bug Skin Base Layer Top, 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

    6
    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

    icebreaker Merino 200 Oasis Leggings with Fly

    $95.00 Shop now launch
    View description
    Our best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings With Fly are the perfect foundation for your cold-weather layering.

    Scored Product Attributes

    6
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 1 year
    5
    in Men's Base Layers

    Smartwool Men's Merino 250 Base Layer Pattern 1/4 Zip | Smartwool

    $115.00 Shop now launch
    View description
    Set out in Men's Merino 250 1/4 zip base layer. Heavy Merino blend built for cold weather. Designed to provide max breathability, comfort. 100% guarantee.

    Scored Product Attributes

    5
    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
    5
    in Men's Base Layers

    Helly Hansen LIFA MERINO MIDWEIGHT 1/2 ZIP

    $110.00 Shop now launch
    View description
    Our LIFA Merino Midweight collection is perfect for any type of activity in cold weather. We combined a 100% merino wool layer with our proven LIFA Stay Warm tech in a 2-layer construction on this 1/2 zip. LIFA Merino MIDWEIGHT delivers all the breatha

    Scored Product Attributes

    5
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.
    5
    in Men's Base Layers

    Helly Hansen MEN'S LIFA MERINO LIGHTWEIGHT T-SHIRT

    $80.00 Shop now launch
    View description
    Our LIFA MERINO Lightweight Tee is perfect for any adventure where you need a warm, breathable and wicking base layer. This useful piece combines our unique Lifa wicking technology with soft merino wool for a breathable, natural warmth.

    Scored Product Attributes

    5
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.
    5
    in Men's Base Layers

    Helly Hansen LIFA Merino Lightweight Half-zip 2-in-1 Base Layer

    $100.00 Shop now launch
    View description
    Our LIFA Merino Lightweight collection is versatile and ideal for all cold weather activities. We used our proven 2-in-1 layer system, combining LIFA Stay Warm moisture management and the natural warmth of merino in an extremely lightweight half-zip. LI

    Scored Product Attributes

    5
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.
    5
    in Men's Base Layers

    Smartwool Men's Merino 250 Base Layer Bottom | Smartwool

    $100.00 Shop now launch
    View description
    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

    5
    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

    Helly Hansen LIFA ACTIVE 1/2 ZIP

    $70.00 Shop now launch
    View description
    LIFA ACTIVE is a performance base layer, delivering superior moisture management and lightweight insulation for all your outdoor activities. LIFA ACTIVE is an advanced 2-layer construction with 100% LIFA fiber next to skin and wicking technical fibers

    Scored Product Attributes

    4
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.
    4
    in Men's Base Layers

    Helly Hansen H1 PRO LIFA SEAMLESS PANTS

    $110.00 Shop now launch
    View description
    H1 PRO LIFA Base Layers use a clever blend of thermal mapping, our LIFA technologies, and wool to precisely control your body temperature, giving you the right amount of warmth in high-intensity scenarios. These base layer pants are fitted for optimal m

    Scored Product Attributes

    4
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.
    3
    in Men's Base Layers

    Meriwool MEN'S MERINO 250 BASE LAYER LONG SLEEVE

    $59.99 Shop now launch
    View description
    Highly fashionable merino long sleeve that fits your style. Who knew comfort can be stylish and affordable? Find more trendy products at Meriwool Layers now!

    Scored Product Attributes

    3
    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 6 Month - 1 Year
    3
    in Men's Base Layers

    Meriwool MEN'S MERINO 250 BASE LAYER LONG SLEEVE

    $59.99 Shop now launch
    View description
    Highly fashionable merino long sleeve that fits your style. Who knew comfort can be stylish and affordable? Find more trendy products at Meriwool Layers now!

    Scored Product Attributes

    3
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: Over 6 Month - 1 Year
    3
    in Men's Base Layers

    NRS NRS Men's Lightweight Shirt

    $54.95 Shop now launch
    View description
    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

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

    UPF 50+

    Recycled Polyester

    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
    2
    in Men's Base Layers

    Outdoor Voices Waffle Longsleeve

    $68.00 Shop now launch
    View description
    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

    2
    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.
    1
    in Men's Base Layers

    Odlo Men's NATURAL + KINSHIP WARM Base Layer Bottoms >> ODLO

    $100.00 Shop now launch
    View description
    Men's NATURAL + KINSHIP WARM Base Layer Bottoms

    Scored Product Attributes

    1
    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: 45 - 90 Day
    1
    in Men's Base Layers

    Arms of Andes Men's Alpaca Wool Long Sleeve Shirt: 110 Ultralight | Arms of Andes

    $75.00 Shop now launch
    View description
    Shop our lightweight long sleeve t-shirt for men with high moisture-wicking properties. Explore outdoors in any climate with the wool long sleeve shirt.

    Scored Product Attributes

    1
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

    Alpaca Fiber

    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 1 - 19 Day

    Good To Know - Brand Attributes

    icon representing Social criteria factor Social

    This brand is LatinX-owned, indicating it is owned and operated by individuals of Latin American descent.
    icon representing Governance criteria factor Governance

    - Brand must describe itself in some way or form as family owned. Do not assume
    icon representing item origin Origins
    Designed in Peru
    Made in Peru
    1
    in Men's Base Layers

    Arms of Andes Mens Alpaca Wool Tank Top: 110 Ultralight | Arms of Andes

    $60.00 Shop now launch
    View description
    The perfect lightweight outdoor Tank Top: made from anti-bacterial 100% Royal Alpaca Wool. Explore more & pack less with Arms of Andes sustainable outdoor gear.

    Scored Product Attributes

    1
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

    Alpaca Fiber

    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 1 - 19 Day

    Good To Know - Brand Attributes

    icon representing Social criteria factor Social

    This brand is LatinX-owned, indicating it is owned and operated by individuals of Latin American descent.
    icon representing Governance criteria factor Governance

    - Brand must describe itself in some way or form as family owned. Do not assume
    icon representing item origin Origins
    Designed in Peru
    Made in Peru
    1
    in Men's Base Layers

    Arms of Andes Mens Alpaca Wool Half-Zip Hoodie: 230 Lightweight | Arms of Andes

    $125.00 Shop now launch
    View description
    The Perfect Hiking Hoodie: made from anti-bacterial & durable 100% Royal Alpaca Wool. Explore more & pack less with Arms of Andes sustainable outdoor gear.

    Scored Product Attributes

    1
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

    Alpaca Fiber

    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 1 - 19 Day

    Good To Know - Brand Attributes

    icon representing Social criteria factor Social

    This brand is LatinX-owned, indicating it is owned and operated by individuals of Latin American descent.
    icon representing Governance criteria factor Governance

    - Brand must describe itself in some way or form as family owned. Do not assume
    icon representing item origin Origins
    Designed in Peru
    Made in Peru
    1
    in Men's Base Layers

    Arms of Andes Men's Alpaca Wool Full-Zip Hoodie: 420 Midweight | Arms of Andes

    $250.00 Shop now launch
    View description
    Alpaca fleece hoodie for the ultimate protection on your adventures: made from warm & comfortable 100% Royal Alpaca Wool. Explore more sustainable outdoor wear.

    Scored Product Attributes

    1
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Materials

    Alpaca Fiber

    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 1 - 19 Day

    Good To Know - Brand Attributes

    icon representing Social criteria factor Social

    This brand is LatinX-owned, indicating it is owned and operated by individuals of Latin American descent.
    icon representing Governance criteria factor Governance

    - Brand must describe itself in some way or form as family owned. Do not assume
    icon representing item origin Origins
    Designed in Peru
    Made in Peru
    1
    in Men's Base Layers

    Thermajohn Men’s Ultra Soft Thermal V-Neck Shirt

    $17.99 Shop now launch
    View description
    You can wear these fleece-lined men’s thermal top by themselves or under another shirt as a base layer that’ll keep you dry with its moisture-wicking material. The top will fit snug so it can trap in your body heat for extra warmth. You’ll enjoy full-mobility with the fabrics four-way stretch without bunching up. Light

    Scored Product Attributes

    1
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.

    This brand offers discounts for teachers and educators to support their contributions to education.
    1
    in Men's Base Layers

    Thermajohn Men’s Ultra Soft Thermal Baselayer Shirt

    $17.99 Shop now launch
    View description
    Crafted with utmost care, our Thermajohn thermal shirt for men is the one to take care of all your winter woes. Featherlight and super soft to the touch, you’ll be surprised at how warm it will keep you.

    Scored Product Attributes

    1
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.

    This brand offers discounts for teachers and educators to support their contributions to education.
    1
    in Men's Base Layers

    Thermajohn Men’s Ultra Soft Thermal Leggings

    $17.99 Shop now launch
    View description
    Outdoor adventures in winters are fun again when you’ve got super soft legging keeping you protected from the cold. Staying indoors is just as fun because your thermal wear adjusts to your surroundings. Temperatures can keep on changing - the warmth of your base layer stays the same.

    Scored Product Attributes

    1
    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 Social criteria factor Social

    This brand offers discounts for first responders, including police, firefighters, and EMTs.

    This brand offers discounts for medical professionals to support their contributions to healthcare.

    This brand provides discounts for active military members and veterans.

    This brand offers discounts for teachers and educators to support their contributions to education.
    1
    in Men's Base Layers

    Indera Mills Men's 2-Layer Merino Performance Crew

    $21.99 Shop now launch
    View description
    2-Layer fabric construction helps trap and retain body heat Fabric Weight: 7.0 oz Fiber Content Outside Layer: 70% Polyester / 30% Merino Wool Inside Layer: 100% Performance Polyester formulated with SILVADUR™ Technology Features SILVADUR™ technology to minimize odor on the fabric Wicks moisture and dries quickly Crew

    Scored Product Attributes

    1
    icon representing Social criteria factor icon representing Enviro criteria factor icon representing Quality criteria factor Certifications
    Warranty: 20 - 34 Day
    0
    in Men's Base Layers

    Terramar Sports Women's Altitude Essential Leggings

    $12.00 Shop now launch
    View description
    Description Our Terramar Everyday Essentials Leggings are a great combination of comfort and warmth. Seamlessly made, these leggings are brushed on the inside and are a heavier weight making them perfect for cooler weather. Features UPF 25+ Seamless construction for a great fit. Control Top waistband for a flattering s

    Scored Product Attributes

    0

    Good To Know - Brand Attributes

    icon representing Social criteria factor Social

    Company participates in community outreach or activism programs.
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