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Women's base layers and underwear

Showing 129 results
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    MEC

    T2 Merino Base Layer Long Sleeve Top - Women's

    $129.95
    (0)
    Member Price Available
  2. NEW

    Janji

    Repeat Merino Long Sleeve - Women's

    $136.95
    5

    Smartwool

    Active Long Sleeve - Women's

    $109.95
    4.7

    Smartwool

    Classic Thermal Merino Base Layer Bottom - Women's

    $104.94$139.95
    25% off
    4.5

    Smartwool

    Classic Thermal Merino Base Layer Crew - Women's

    $104.94$139.95
    25% off
    4.8
  6. NEW

    Salomon

    SENSE Merino LS T-Shirt - Women's

    $124.95
    (0)

    Mons Royale

    Bella Merino Air-Con Long Sleeve Hood - Women's

    $159.95
    4
  9. NEWExclusive to MEC

    Odlo

    Seamless Performance Wool Long Sleeve Top - Women's

    $179.95
    (0)
  10. NEW

    Smartwool

    Classic Thermal Merino Base Layer 1/4 Zip - Women's

    $159.95
    4.7
  11. Exclusive to MEC

    Odlo

    Seamless Performance Wool Hoodie - Women's

    $199.95
    (0)
  12. NEW

    Janji

    Rover Merino Hoodie - Women's

    $189.95
    (0)
  13. NEW

    Mons Royale

    Yotei Merino Long Sleeve - Women's

    $169.95
    (0)

    MEC

    T2 Merino Base Layer Bottoms - Women's

    $129.95
    (0)
    Member Price Available
  15. Top seller

    Arc'teryx

    Rho Crew - Women's

    $130.00
    4.5

    MEC

    T3 Merino Base Layer Bottoms - Women's

    $139.95
    (0)
    Member Price Available

    MEC

    T3 Merino Base Layer Long Sleeve Top - Women's

    $139.95
    5
    Member Price Available
  20. NEW

    Kari Traa

    Rose Long Sleeve 2.0 - Women's

    $149.95
    (0)
  21. NEW

    Kari Traa

    Rose High Waist Pants - Women's

    $149.95
    3.2

    Vuori

    Chilled Out Legging - Women's

    $105.57$175.95
    40% off
    (0)

    Fjallraven

    Abisko Lite Fleece Half Zip - Women's

    $111.96$139.95
    20% off
    4.2

    Kari Traa

    Smekker Long Sleeve Crew - Women's

    $159.95
    4.3
  26. Exclusive to MEC

    Odlo

    Seamless Performance Wool Bottom - Women's

    $179.95
    (0)
  27. NEW

    Janji

    Waffleloft Long Sleeve - Women's

    $136.95
    (0)
  28. NEW

    Mons Royale

    Cascade Merino Flex Legging - Women's

    $149.95
    (0)
  29. NEW

    Kari Traa

    Smekker High Waist Pants - Women's

    $159.95
    5
  30. NEWExclusive to MEC

    Odlo

    Fundamentals Performance Warm Set - Women's

    $179.95
    (0)
  31. NEWExclusive to MEC

    Odlo

    Performance Warm Long Sleeve Top - Women's

    $119.95
    (0)

    Vuori

    V1 Run Bra - Women's

    $109.95
    (0)
  33. NEWExclusive to MEC

    Odlo

    Performance Warm Bottom - Women's

    $119.95
    (0)

    Mountain Hardwear

    AirMesh Long Sleeve Hoodie - Women's

    $129.95
    5
  35. NEW

    Devold

    Reverso Merino 340 Pant - Women's

    $244.95
    (0)

    La Sportiva

    Cosmosis Legging - Women's

    $109.95
    5
  37. NEW

    Janji

    Ascend Sports Bra - Women's

    $117.95
    (0)
  38. NEW

    Devold

    Reverso Merino 340 Hoodie - Women's

    $269.95
    (0)

    Patagonia

    Shadowlite High Impact Adjustable Bra - Women's

    $109.00
    (0)

    Kari Traa

    Smekker Half-Zip Baselayer Top - Women's

    $169.95
    (0)

    Smartwool

    Intraknit All-Season Merino Baselayer Long Sleeve - Women's

    $164.95
    4.8

    Janji

    Pinnacle RD Ultra Bra - Women's

    $111.95
    (0)

    Smartwool

    Classic All-Season Merino Base Layer Bottoms - Women's

    $124.95
    4.4

    Smartwool

    Intraknit Thermal Merino Base Layer 3/4 Bottoms - Women's

    $139.95
    4.4

    Smartwool

    Classic All-Season Merino Base Layer Crew - Women's

    $129.95
    4.6

    Smartwool

    Classic Thermal Merino Base Layer 1/4 Zip - Women's

    $159.95
    4.8
  47. NEW

    Devold

    Duo Active Merino 205 Pant - Women's

    $119.95
    (0)
  48. NEW

    Odlo

    Performance Warm Half-Zip - Women's

    $129.95
    (0)
  49. NEW

    Odlo

    Performance Warm Blackcomb Half Zip - Women's

    $139.95
    (0)
  50. NEW

    Craft

    Wool Extreme X Long Sleeve 2 - Women's

    $119.95
    (0)
  51. NEW

    Kari Traa

    Anna High Waist Pants - Women's

    $129.95
    (0)
  52. NEW

    Devold

    Signature Silk 230 Crossneck - Women's

    $214.95
    (0)

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Comfy all season

The underrated heroes of outdoor clothing? Base layers and underwear. A comfy next-to-skin layer made of materials such as moisture-wicking polyester or itch-free merino wool can keep you warm without overheating while you’re skiing, hiking, trail running, snowshoeing or camping.

If you’re new to the idea of a layering system, check out our article on how to layer for outdoor activities. MEC has a big range of base layers to choose from for getting outside while staying comfy, including brands like Smartwool, Kari Traa and own in-house MEC Label brand.

Layer up: merino vs. synthetic

When it comes to knowing how to choose base layers and underwear, it largely depends on the activities you’ll be doing, as well as the amount of warmth you’re looking for.

Synthetic base layers (often polyester) wick sweat, are durable, and dry quickly. Merino wool base layers are made from a natural fabric that moves and stretches with your body; it’s also naturally antimicrobial, which reduces odors if you’re wearing them for multiple days at a time. To get benefits from both, a merino-synthetic blend is a great option.