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Base Layer Tops
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.
Merino Midweight Base Layer Top - Kids'
REI Co-opOh so soft and not itchy, the kids' REI Co-op merino midweight base layer top is an ideal first layer for cold weather. It naturally regulates temp and is certified to the Responsible Wool Standard.
Merino Sport Long-Sleeve Quarter-Zip Top - Men's
SmartwoolBuilt with the outdoor enthusiast in mind, the men's Smartwool Merino Sport long-sleeve quarter-zip top provides thermoregulation, odor resistance and durability for years of adventure.
Midweight Base Layer Crew Top - Men's
BurtonStay dry, warm and stoked all day with the men's Burton Midweight Base Layer Crew top, which gives you moisture-wicking fabric and comfortable, chafe-free seams.
Midweight Base Layer Half-Zip Top - Men's
REI Co-opHard-charging winter days start out cold, but you always warm up. The men's REI Co-op Midweight Base Layer half-zip top offers the warmth of long sleeves and the easy venting of a front zipper.