This crew takes the edge off fickle weather. In clearing conditions, it has the fastest dry time of all Patagonia's performance baselayer fabrics, with an open-knit construction that breathes and wicks to keep you dry and cool. When the weather window shuts, you can wear it as insulation beneath layers. With a self-fabric neck that's soft against the skin, and raglan sleeves and flat-ribbed underarm panels that merge out of the way of shoulder straps to eliminate chafe. Made from 4-oz 100 % polyester (54% recycled) with Gladiodor natural odor control for the garment. Recyclable through the Common Threads Recycling Program.