A beautiful line, your climbing partner, a rope and a rack: The finest mountain days merge elegance and efficiency. The R1® Pullover maintains a similar focus, with a high/low interior grid polyester fabric (Polartec® Power Grid™) that stretches, breathes, moves moisture and insulates – now 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. Simple cuffs stay comfortable against the wrists, minimalist zippers reduce bulk, and. a soft, kissing-welt zipper garage at the chin offers next-to-skin comfort. With a smooth, microfiber face for easy layering, offset shoulder seams for pack-wearing comfort, a zippered chest pocket and Polygiene® permanent odor control.