R1 fleece still sets the bar for alpine efficiency. Made with Polartec® Power Grid™ polyester, a Patagonia exclusive, it stretches, traps heat and compresses to practically nothing. A beautiful line, your climbing partner, rope and a rack: The greatest days merge elegance and efficiency. Our R1® Pullover maintains a similar focus, with a durable, finely tuned high/low interior grid polyester fabric (Polartec® Power Grid™) that warms, stretches, moves moisture and insulates - recently redesigned exclusively for Patagonia to be even lighter and more breathable. Its technical fit accommodates light underlayers or works as a stand-alone top, and it squashes down to practically nothing in your pack. With simple cuffs; a smooth, microfiber face for easy layering; raglan sleeves for pack-wearing comfort; a zippered chest pocket; and Polygiene® permanent odor control. Exclusive to Patagonia, this Polartec® Power Grid™ fab