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Men's base layer topsview all (27)27 products

Algonquin Lightweight Crew, men'sby Minus33$17.00$54.99Weight (oz): 6.6100% 17.5 Micron Merino Wool, 170 g/m2 Jersey knit constructionFlat lock seams to prevent chafing
Microweight 150 Zip T, men'sby Smart Wool$27.75$53.80Weight (oz): 8.2100% superfine merino wool Zip-T collar for ventilation. Flatlock seam consrtuction eliminates chafing
PhD UL Short Sleeve, men'sby Smart Wool$29.95$69.95Weight (oz): 4.6Body: 56% Merino Wool, 44% Polyester Mesh: 54% Merino Wool, 46% PolyesterFlatlock seam construction designed to eliminate chafing
PHD Light Long Sleeve, men'sby Smart Wool$31.35$85.00Weight (oz): 12.0PhD®, Lightweight Merino blendUPF 50+, Body-mapped mesh, Moves moisture, dries quickly

Women's base layer topsview all (6)6 products

Midweight 250 Pattern Crew, women'sby Smart Wool$52.60$105.00Weight (oz): 7.4100% Merino WoolMidweight crew with stylish pattern designs.
Midweight 250 Crew, women'sby Smart Wool$69.85$95.00Weight (oz): 7.1100% Merino WoolFeminine fit with set-in sleeves & shoulder panels to eliminate top shoulder seams
Jungfrau T-Shirt, women's
Jungfrau T-Shirt, women'sby Mammut$70.00Weight (oz): 3.5 Polartec® Power Dry®Strong, high elasticity, good moisture transport, quick-drying, anti-microbial
Phase AR Crew LS, women's
Phase AR Crew LS, women'sby Arc'teryx$75.00Weight (oz): 4.6Phasic™ AR, Phasic™ SLMoisture-wicking, Breathable, Quick-drying

Men's base layer bottomsview all (7)7 products

Microweight 150 Boxer Brief, men'sby Smart Wool$37.95$48.00Weight (oz): 3.596% Merino Wool, 4% ElasteneEmbossed elastic waistband and Coats Seamsoft thread on flatlock internal seams for increased comfort
Phase SL Brief, men's
Phase SL Brief, men'sby Arc'teryx$39.00Weight (oz): 1.4Phasic™ SLMoisture-wicking, Breathable, Lightweight, Quick-drying
Phase SL Boxer, men's
Phase SL Boxer, men'sby Arc'teryx$45.00Weight (oz): 2.3Phasic™ SLMoisture-wicking, Breathable, Lightweight, Quick-drying
Microweight 150 Bottom, men'sby Smart Wool$46.00$75.00Weight (oz): 5.5100% superfine merino Coats Eloflex thread at bottom hem openeings for increased durability

Women's base layer bottoms4 products

Midweight 250 Pattern Bottom, women'sby Smart Wool$46.80$100.00Weight (oz): 6.7100% Merino WoolMidweight bottom with stylish patterns
Midweight 250 Bottom, women'sby Smart Wool$65.45$95.00Weight (oz): 6.7100% Merino WoolWide self fabric covered elastic waistband
Phase SV Bottom, women'sby Arc'teryx$65.45$79.00Weight (oz): 4.4Phasic™ SV (body) Phasic™ AR (panels)Heavyweight base layer for high output activities in cold temperatures
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