Dense honeycomb fabric is brushed for warmth, softness and compressibility, providing excellent insulation, breathability and fastest wicking; smooth jersey exterior glides easily within layering systems Elastic waistband is brushed for next-to-skin softness Functional fly Gusseted crotch for unimpeded mobility 4.8-oz 100% polyester (64% recycled) with Gladiodor™ natural odor control. Recyclable through Patagonia's commom threads Recycling Program Colors subject to availability