The soft and compressible Patagonia Men's Capilene 3 Mw Zip-tneck provides excellent insulation and ultimate comfort next to the skin. The most versatile and fastest-wicking of our performance baselayers, it stretches, dries quickly, and resists wear. It has brushed fabric on the inside for warmth, with a jersey exterior that glides smoothly under layers. The low-bulk zip-neck makes for easy venting. Details include raglan sleeves and underarm panels for unlimited mobility, and offset shoulder seams to eliminate pack-strap chafe.