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Sun-Protective Fabric Base Layers
(92 products)Products (92)
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- REI Co-opMidweight Long-Sleeve Base Layer Top - Women's$26.83 - $38.39Save 30% - 51%compared to  $54.95Underwear Weight:MidweightSize Type:Regular, Plus
- REI Co-opMidweight Long-Sleeve Base Layer Top - Men'sTop Rated$26.83 - $38.39Save 30% - 51%compared to  $54.95Underwear Weight:MidweightSize Type:Regular, Big, Tall
- REI Co-opMidweight Base Layer Tights - Women's$26.83 - $38.39Save 30% - 51%compared to  $54.95Underwear Weight:MidweightSize Type:Regular, Plus, Petite
- Sale Ends Sep 1REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Women'sTop Rated$27.89Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Regular, Plus
- Sale Ends Sep 1REI Co-opMidweight Base Layer Half-Zip Top - Women's$41.89Save 30%compared to  $59.95Underwear Weight:MidweightSize Type:Regular, Plus
- Sale Ends Sep 1REI Co-opMidweight Base Layer Bottoms - Men's$38.39Save 30%compared to  $54.95Underwear Weight:MidweightSize Type:Regular, Big, Tall
- Sale Ends Sep 1REI Co-opMidweight Base Layer Half-Zip Top - Men'sTop Rated$41.89Save 30%compared to  $59.95Underwear Weight:MidweightSize Type:Regular, Big, Tall
- Sale Ends Sep 1REI Co-opLightweight Half-Zip Base Layer Top - Women's$31.39Save 30%compared to  $44.95Underwear Weight:LightweightSize Type:Regular, Plus
- Sale Ends Sep 1REI Co-opLightweight Long-Sleeve Crew Base Layer Top - Men'sTop Rated$27.89Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Regular, Big, Tall
- Sale Ends Sep 1REI Co-opLightweight Crew Base Layer Top - Men'sTop Rated$20.89Save 30%compared to  $29.95Underwear Weight:LightweightSize Type:Regular, Big, Tall
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Men'sTop Rated$79.95Underwear Weight:LightweightSize Type:Regular, Big
- Sale Ends Sep 1REI Co-opLightweight Crew Base Layer Top - Women'sTop Rated$20.89Save 30%compared to  $29.95Underwear Weight:LightweightSize Type:Regular, Plus
- Sale Ends Sep 1REI Co-opLightweight Base Layer Bottoms - Men'sTop Rated$27.89Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Regular, Big, Tall
- Sale Ends Sep 1REI Co-opLightweight Base Layer Bottoms - Infants'/Toddlers'Top Rated$13.89Save 30%compared to  $19.95Underwear Weight:LightweightSize Type:Regular
- Sale Ends Sep 1REI Co-opLightweight Crew Base Layer Top - Infants'/Toddlers'Top Rated$13.89Save 30%compared to  $19.95Underwear Weight:LightweightSize Type:Regular
- Sale Ends Sep 1REI Co-opLightweight Base Layer Tights - Women'sTop Rated$27.89Save 30%compared to  $39.95Underwear Weight:LightweightSize Type:Regular, Plus
- REI Co-opMidweight Base Layer Bottoms - Kids'Top Rated$23.93 - $34.95Underwear Weight:MidweightSize Type:Regular
- REI Co-opMidweight Base Layer Crew Top - Kids'Top Rated$23.93 - $34.95Underwear Weight:MidweightSize Type:Regular
- Sale Ends Sep 1REI Co-opLightweight Half-Zip Base Layer Top - Men'sTop Rated$31.39Save 30%compared to  $44.95Underwear Weight:LightweightSize Type:Regular, Big, Tall
- Sale Ends Sep 1REI Co-opLightweight Base Layer Bottoms - Kids'Top Rated$20.89Save 30%compared to  $29.95Underwear Weight:LightweightSize Type:Regular
- Sale Ends Sep 1REI Co-opLightweight Base Layer Crew Top - Kids'Top Rated$20.89Save 30%compared to  $29.95Underwear Weight:LightweightSize Type:Regular
- REI Co-opMerino 185 Base Layer Bottoms - Men's$79.95Underwear Weight:LightweightSize Type:Regular, Big
- REI Co-opMerino 185 Long-Sleeve Base Layer Top - Women's$79.95Underwear Weight:LightweightSize Type:Regular
- REI Co-opMerino 185 Base Layer Top - Women's$69.95Underwear Weight:LightweightSize Type:Regular
- REI Co-opMidweight Crew Base Layer Top - Toddlers'Top Rated$24.95Underwear Weight:MidweightSize Type:Regular
- REI Co-opMidweight Base Layer Bottoms - Toddlers'Top Rated$24.95Underwear Weight:MidweightSize Type:Regular
- Terramar2.0 Cloud Nine Half-Zip Base Layer Top - Women's$34.73Save 30%compared to  $50.00Members use code LABORDAY2025 for an extra 20% off at REI OutletUnderwear Weight:MidweightSize Type:RegularREI OUTLET
- REI Co-opMerino 185 Base Layer Top - Men's$69.95Underwear Weight:LightweightSize Type:Regular, Big
- REI Co-opHeavyweight Merino Base Layer Bottoms - Women'sTop Rated$99.95Underwear Weight:HeavyweightSize Type:Regular, Plus
- IcebreakerMerino 200 Oasis Long-Sleeve Crewe Thermal Top - Men'sTop Rated$51.83 - $105.00Underwear Weight:MidweightSize Type:Regular, Big
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