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Underwear Tops
Merino 185 Base Layer Top - Women's
REI Co-opSoft, breathable and naturally odor resistant, the women's REI Co-op Merino 185 short-sleeve base layer top is an ideal next-to-skin layer for hiking, cycling and even sleeping.
Merino 185 Base Layer Top - Women's Plus Sizes
REI Co-opThe women's REI Co-op Merino 185 short-sleeve base layer top is an ideal next-to-skin layer for hiking, cycling and even sleeping, thanks to the soft, breathable, naturally odor-resistant merino wool.
Merino 185 Long-Sleeve Base Layer Top - Men's
REI Co-opSoft, breathable and naturally odor resistant, the ultrafine merino wool of the men's REI Co-op Merino 185 long-sleeve base layer top is beloved while sweating on the trail—and sleeping in the tent.
Merino 185 Long-Sleeve Base Layer Top - Men's Tall Sizes
REI Co-opSoft, breathable and naturally odor resistant, the ultrafine merino wool of the men's REI Co-op Merino 185 long-sleeve base layer top is beloved for both sweating on the trail and just sleeping.
Merino 185 Long-Sleeve Base Layer Top - Women's
REI Co-opBeloved while sweating on the trail—and sleeping in the tent—the ultrafine merino wool of the women's REI Co-op Merino 185 long-sleeve base layer top is soft, breathable and naturally odor resistant.
Merino 185 Long-Sleeve Base Layer Top - Women's Plus Sizes
REI Co-opBeloved while hiking, biking and even just sleeping, the ultrafine merino wool of the women's REI Co-op Merino 185 long-sleeve base layer top is soft, breathable and naturally odor resistant.
Merino 185 Long-Sleeve Half-Zip Base Layer Top - Men's
REI Co-opSoft and breathable, the ultrafine merino wool of the naturally odor-resistant men's REI Co-op Merino 185 long-sleeve half-zip base layer top is ideal for sweating on the trail—and sleeping in a tent.
Merino 185 Long-Sleeve Half-Zip Base Layer Top - Men's Tall Sizes
REI Co-opThe ultrafine merino wool of the men's REI Co-op Merino 185 long-sleeve half-zip base layer top is an ideal soft, breathable, odor-resistant layer for sweating on the trail—and sleeping in a tent.
Merino 185 Long-Sleeve Half-Zip Base Layer Top - Women's
REI Co-opNaturally odor resistant, the ultrafine merino wool of the soft, breathable women's REI Co-op Merino 185 long-sleeve half-zip base layer top is ideal for sweating on the trail—and sleeping in a tent.
Merino 185 Long-Sleeve Half-Zip Base Layer Top - Women's Plus Sizes
REI Co-opFor everything from sleeping to sweating on the trail, the ultrafine merino wool of the women's REI Co-op Merino 185 long-sleeve half-zip base layer is ideal. It's soft, breathable and odor resistant.
Merino 200 Sonebula Long-Sleeve High-Neck Thermal Top - Men's
IcebreakerBuilt with soft merino, the Icebreaker Merino 200 Sonebula Long-Sleeve High-Neck Thermal top regulates body temperature in all weather conditions while resisting odors. High collar adds coverage.
Merino 250 Base Layer Crew Top - Women's Plus Sizes
SmartwoolImproved with a new fit and colors, the women's Smartwool Merino 250 Base Layer Crew top helps you look and feel better with perfect midweight warmth and dry comfort for your active best.
Merino 260 Tech Long-Sleeve Half-Zip Thermal Top - Kids'
IcebreakerSuit them up for cold epics in the kids' Icebreaker Merino 260 Tech Long-Sleeve Half-Zip Thermal top. This midweight base layer is designed for easy layering and temperature regulation on active days.
Merino Base Layer T-Shirt - Women's
SmartwoolLayering is smart when you know the mercury will dip and rise on your hike. The Smartwool Merino base layer tee works well undercover on cool mornings or as a standalone piece in warmer temps.