What Our Gearhead(R) Experts Are Saying:"I have been wearing this crew as a baselayer for ski tours and cold-weather hikes for years, and the diamond-grid construction is the real reason it works so well. It traps warmth without feeling heavy, and the HeiQ Mint odor control holds up across multiple days on the trail without question."Cold morning light filters through the treeline as the temperature reads well below freezing, and the Capilene Midweight Crew Top from Patagonia is already doing its job. The slim fit sits close to the body without restricting movement, and the smooth face slides easily under a fleece or shell when it is time to add layers as the day shifts. What makes this crew a true all-around baselayer is how much it handles without drawing attention to itself. Hollow-core yarns and a diamond-grid back construction trap warm air and wick moisture simultaneously, keeping body temperature regulated whether the pace is slow and steady or pushing hard on a long climb. HeiQ Mint odor control extends fresh wear across multi-day trips, and low-profile thumb loops provide just enough hand coverage when you need it most. Built from 100% recycled polyester and sewn in a Fair Trade Certified factory, this is a baselayer with nothing to hide and everything to offer.