The Cap 3 MW Zip Neck is an awesome baselayer constructed of Capilene 3 is the most versatile and fastest-wicking of Patagonia's performance baselayer fabrics. It provides excellent insulation and ultimate comfort next to the skin while the deep front zip allows for easy layering and quick ventilation. The dense interior honeycomb construction is brushed for warmth, softness and compressibility, and the smooth jersey exterior glides readily beneath layers. Details include a rib collar, and raglan sleeves and single-piece shoulder panels that merge out of the way of shoulder straps. Made from 4.8-oz 100% polyester (64% recycled) with Gladiodor