The finest mountain days merge elegance and efficiency. Patagonia's R1 Pullover Fleece maintains a similar focus, with a high/low interior grid polyester/elastane fabric (Polartec Power Grid) that stretches, breathes, moves moisture and insulates, made exclusively for Patagonia to be both light and breathable. Its technical fit accommodates light underlayers or works as a stand-alone top, and it packs down to practically nothing in your backpack. 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. The R1 also features a smooth, microfibre face for easy layering, offset shoulder seams for pack-wearing comfort, a zippered left-chest pocket and Polygiene permanent odour control.