Blending minimalism with unconditional performance, our R1 midlayers are made for stop-and-go, cool-weather layering that keeps you warm and comfortable across the full spectrum of mountain endeavors. The Polartec Power Grid fabric - made exclusively for Patagonia - features a high/low interior grid recycled polyester/spandex blend that stretches, breathes, moves moisture and insulates. Lightweight and soft on the skin, the R1 Pullover Hoody has a technical fit that accommodates underlayers yet can be worn as a stand-alone top when conditions permit; it compresses down to practically nothing in your pack. For higher-output use and enhanced mobility, we've incorporated lighter weight, super stretchy grid fabric along the side panels, in the ...