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Underwear: Deals

(405 products)
Products (405)
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    FisheSports Bra
    $39.73
    Save 37%
    compared to  $64.00
    0 reviews
    Bra Support:
    Medium Impact
    Support Style:
    Compression
    Fabric:
    76% polyester/24% spandex
    REI OUTLET
  • Sale Ends May 26
    REI Co-opMidweight Long-Sleeve Base Layer Top - Women's
    $38.39
    Save 30%
    compared to  $54.95
    239 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Plus
  • Sale Ends Today
    Threads 4 ThoughtAmorette Line Print Sports Bra
    $33.73
    Save 41%
    compared to  $58.00
    1 reviews with an average rating of 4.0 out of 5 stars
    Bra Support:
    Medium Impact
    Support Style:
    Compression / Encapsulation
    Fabric:
    77% recycled polyester/23% spandex
    REI OUTLET
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Kids'
    $48.73
    Save 25%
    compared to  $65.00
    52 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 26
    SmartwoolIntraknit Strappy Bra
    $56.19
    Save 25%
    compared to  $75.00
    1 reviews with an average rating of 3.0 out of 5 stars
    Bra Support:
    Low Impact
    Support Style:
    Compression
    Fabric:
    69% nylon/35% TENCEL lyocell/17% elastane/14% polyester (exclusive of decoration)
    SmartwoolIntraknit Active Base Layer Bottoms - Men's
    $81.73
    Save 25%
    compared to  $110.00
    1 reviews with an average rating of 3.0 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends May 26
    SmartwoolClassic All-Season Merino T-Shirt - Men's
    $59.99
    Save 25%
    compared to  $80.00
    54 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    Top Rated
    tasc PerformanceElevation Merino T-Shirt - Women's
    $49.73
    Save 37%
    compared to  $79.00
    75 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    REI OUTLET
    tasc PerformanceElevation Merino T-Shirt - Men's
    $49.73
    Save 37%
    compared to  $79.00
    38 reviews with an average rating of 4.2 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends May 26
    Top Rated
    SmartwoolClassic All-Season Merino Long-Sleeve Base Layer Top - Men's
    $67.49
    Save 25%
    compared to  $90.00
    56 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 26
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Women's
    $86.19
    Save 25%
    compared to  $115.00
    735 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women's
    $27.89
    Save 30%
    compared to  $39.95
    7 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Plus
    Top Rated
    Arc'teryxRho Heavyweight Base Layer Bottoms - Men's
    $84.83
    Save 29%
    compared to  $120.00
    62 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    StanceWebbed Boxer Briefs - Men's
    $19.73
    Save 26%
    compared to  $27.00
    0 reviews
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Today
    Top Rated
    IcebreakerMerino 125 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
    $86.73
    Save 35%
    compared to  $135.00
    10 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends May 26
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's
    $55.89
    Save 30%
    compared to  $79.95
    194 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends May 26
    Kari TraaMina Long-Sleeve Base Layer Top - Women's
    $41.73
    Save 30%
    compared to  $60.00
    1 reviews with an average rating of 4.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 26
    Kari TraaLucie Half-Zip Base Layer Top - Women's
    $62.73
    Save 30%
    compared to  $90.00
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 26
    Kari TraaSmekker Long-Sleeve Base Layer Top - Women's
    $83.73
    Save 30%
    compared to  $120.00
    4 reviews with an average rating of 3.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Today
    Top Rated
    IcebreakerMerino 260 Tech Long Sleeve Crewe Base Layer Top - Men's
    $109.73
    Save 33%
    compared to  $165.00
    5 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends May 26
    Kari TraaAlma Half-Zip Base Layer Top - Women's
    $55.73
    Save 30%
    compared to  $80.00
    0 reviews
    Underwear Weight:
    Ultralightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Today
    Icebreaker125 ZoneKnit Crewe Base Layer Shirt - Men's
    $73.73
    Save 35%
    compared to  $115.00
    4 reviews with an average rating of 4.3 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
    REI OUTLET
  • Sale Ends May 26
    Kari TraaLucie Base Layer Pants - Women's
    $55.73
    Save 30%
    compared to  $80.00
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 26
    Kari TraaAlma Hood Base Layer Top - Women's
    $55.73
    Save 30%
    compared to  $80.00
    0 reviews
    Underwear Weight:
    Ultralightweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends May 26
    Top Rated
    SmartwoolClassic Thermal Merino Base Layer Bottoms - Men's
    $86.19
    Save 25%
    compared to  $115.00
    615 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big
  • Sale Ends May 26
    REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men's
    $55.89
    Save 30%
    compared to  $79.95
    172 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big
  • Sale Ends May 26
    REI Co-opMerino 185 Base Layer Top - Women's
    $48.89
    Save 30%
    compared to  $69.95
    41 reviews with an average rating of 4.4 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
  • Sale Ends May 26
    Top Rated
    REI Co-opMidweight Long-Sleeve Base Layer Top - Men's
    $38.39
    Save 30%
    compared to  $54.95
    150 reviews with an average rating of 4.5 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends May 26
    REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men's
    $27.89
    Save 30%
    compared to  $39.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular, Big, Tall
  • Sale Ends Today
    prAnaChakara Crop Top - Women's
    $44.73
    Save 40%
    compared to  $75.00
    0 reviews
    Support Style:
    Compression
    Fabric:
    93% recycled nylon/7% LYCRA elastane
    REI OUTLET
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