Patagonia Capilene Midweight Crew Top A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. The top is constructed using hollow-core yarns and a diamond grid backing, a material that wicks away sweat and excess moisture from the skin keeping you comfortable no matter how intense you are working. Not only does this wick away sweat this is also fast drying keeping you comfortable throughout us. The raglan sleeve construction with underarm gussets delivers chafe-free comfort allowing a broad range of motion so you can focus on the trail. Finishing the top is the integration of HeiQ technology, engineered to eliminate odour causing bacteria and provide you with a cleaner, fresher smell between washes; meaning less washing and longer wearing.