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Sun-Protective Fabric Boys' Underwear

(16 products)
Products (16)
Remove features filter:Sun-Protective Fabric
Sort: Best Match
    Top Rated
    REI Co-opMidweight Base Layer Bottoms - Kids'
    $34.95
    14 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Base Layer Crew Top - Kids'
    $22.39
    Save 25%
    compared to  $29.95
    13 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Kids'
    $34.95
    9 reviews with an average rating of 4.9 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    New arrival
    TerramarFree Ride Heritage Midweight Thermal 2-Piece Set - Kids'
    $19.73
    Save 34%
    compared to  $30.00
    Members use code LABORDAY26 to save an extra 20% thru 9/7.
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Top Rated
    REI Co-opMerino Midweight Base Layer Bottoms - Kids'
    $49.95
    16 reviews with an average rating of 4.6 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    New arrival
    Terramar4.0 Thermafleece 2-Piece Base Layer Set - Kids'
    $29.73
    Save 33%
    compared to  $45.00
    Members use code LABORDAY26 to save an extra 20% thru 9/7.
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    REI OUTLET
  • Sale Ends Sep 7
    Top Rated
    REI Co-opLightweight Base Layer Bottoms - Kids'
    $22.39
    Save 25%
    compared to  $29.95
    11 reviews with an average rating of 4.7 out of 5 stars
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Base Layer Bottoms - Toddlers'
    $17.93 - $24.95
    9 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Sep 7
    REI Co-opLightweight Crew Base Layer Top - Infants'/Toddlers'
    $14.89
    Save 25%
    compared to  $19.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMerino Midweight Base Layer Crew Top - Kids'
    $49.95
    32 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
  • Sale Ends Sep 7
    REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'
    $14.89
    Save 25%
    compared to  $19.95
    0 reviews
    Underwear Weight:
    Lightweight
    Size Type:
    Regular
    Top Rated
    REI Co-opMidweight Base Layer Crew Top - Toddlers'
    $17.93
    Save 28%
    compared to  $24.95
    16 reviews with an average rating of 4.8 out of 5 stars
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    BurtonFleece Base Layer Set - Toddlers'
    $64.95
    0 reviews
    Underwear Weight:
    Heavyweight
    Size Type:
    Regular
    Hot ChillysOriginals Print Base Layer Crew - Kids'
    $39.73
    Save 27%
    compared to  $55.00
    Members use code LABORDAY26 to save an extra 20% thru 9/7.
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Hot ChillysOriginals Solid Base Layer Crew - Kids'
    $34.73
    Save 29%
    compared to  $49.00
    Members use code LABORDAY26 to save an extra 20% thru 9/7.
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
    Hot ChillysOriginals Print Base Layer Pants - Kids'
    $39.73
    Save 27%
    compared to  $55.00
    Members use code LABORDAY26 to save an extra 20% thru 9/7.
    0 reviews
    Underwear Weight:
    Midweight
    Size Type:
    Regular
    REI OUTLET
  • Limited time only! The R E I Co-op Mastercard.

    $130 in value

    Get $30 in card rewards when approved by Sep 7. Plus, earn a $100 REI gift card after first qualifying purchase. Terms apply.

Sort: Best Match
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