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Base Layer Bottoms
  1. Gear Library
  2. Clothing
  3. Underwear
  4. Underwear Bottoms
  5. Base Layer Bottoms
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    Logan Base Layer Bottoms - Men's
    Lole

    When it comes to base layers, basic is better. The men's Lole Logan base layer bottoms are perfect under your gear for outdoor training or activities, or for everyday life.

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 150 Lace Base Layer Bottoms - Women's
    Smartwool

    Layered under a pair of pants or on their own, these women's Smartwool Merino 150 Lace base layer bottoms are just the thing for an afternoon of snowshoeing or cool-weather hiking.

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 185 Base Layer Bottoms - Men's
    REI Co-op

    Soft, breathable and naturally odor resistant, the ultrafine merino wool of the men's REI Co-op Merino 185 base layer bottoms is just as beloved while sweating on the trail as sleeping in the tent.

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 185 Base Layer Bottoms - Men's Tall Sizes
    REI Co-op

    Soft, breathable and naturally odor resistant, the ultrafine merino wool of the men's REI Co-op Merino 185 base layer bottoms is beloved for sweating on the trail—and just sleeping!

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 185 Base Layer Bottoms - Women's
    REI Co-op

    Just as beloved while sweating on the trail as sleeping in the tent, the ultrafine merino wool of the women's REI Co-op Merino 185 base layer bottoms is soft, breathable and naturally odor resistant.

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 185 Base Layer Bottoms - Women's Plus Sizes
    REI Co-op

    Just as beloved while sweating as while sleeping, the ultrafine merino wool of the women's REI Co-op Merino 185 base layer bottoms is soft, breathable and naturally odor resistant.

    Weight: Lightweight

    Underwear BottomsBase Layer Bottoms

    Merino 260 Tech High Rise Base Layer Leggings - Women's
    Icebreaker

    Warm merino bottoms for the coldest months, the women's Icebreaker Merino 260 Tech High Rise base layer leggings are great for winter layering on skiing, snowshoeing or other cold-weather adventures.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    Merino Midweight Base Layer Bottoms - Kids'
    REI Co-op

    Ideal for cold weather, the kids' REI Co-op merino midweight base layer bottoms are soft—not scratchy—naturally regulate temp and made with wool that's certified to the Responsible Wool Standard.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    MerinoFine Base Layer Leggings - Women's
    Icebreaker

    Keep the winter chill away with the women's Icebreaker MerinoFine base layer leggings, which feature a high waist for added coverage—and its merino wool is naturally stretchy and odor resistant.

    Weight: Heavyweight

    Underwear BottomsBase Layer Bottoms

    Midweight Base Layer Bottoms - Men's
    REI Co-op

    An ideal performance layer, the men's REI Co-op Midweight Base Layer Bottoms boast a smooth face and low-bulk seams for easy layering and a brushed back for added warmth and comfort.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    Midweight Base Layer Pants - Men's
    Burton

    Stay dry, warm and stoked all day with the men's Burton Midweight Base Layer pants, which give you moisture-wicking fabric with a cottonlike feel and a plush waistband.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    Midweight Base Layer Tights - Women's
    REI Co-op

    Start with a high-performing next-to-skin layer and take advantage of the snow. The women's REI Co-op Midweight Base Layer Tights have a smooth face for easy layering and brushed interior for warmth.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    Midweight Long Underwear Bottoms - Kids'
    REI Co-op

    The kids' REI Co-op Midweight Long Underwear Bottoms are warm and very good at wicking moisture, making them an ideal base layer for highly aerobic cold-weather fun, like skiing and snowshoeing.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

    Midweight Long Underwear Bottoms - Toddlers'
    REI Co-op

    The toddlers' REI Co-op Midweight Long Underwear Bottoms are warm and very good at wicking moisture, making them an ideal base layer for highly aerobic cold-weather fun, like skiing and snowshoeing.

    Weight: Midweight

    Underwear BottomsBase Layer Bottoms

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