Regular fit: These bottoms are true to size for an easy, comfortable fit. Part of an exclusive collaboration with Japanese streetwear brand Undercover, our 50/50 Down Trousers are stuffed with 800-fill ProDown™ that delivers incredible insulation and retains its loft even when wet. We have integrated a unique 50/50 down baffle structure, pairing down baffles with a highly air-permeable face fabric to create a groundbreaking breathable down layer. This design prevents overheating by allowing heat and moisture to escape and is incredibly compressible, perfect for all your active adventures.