The R1 Jacket's popularity among backcountry athletes was inevitable: it stretches, breathes, wicks and warms with ultimate efficiency. And the full zip front makes it super versatile, from a midlayer in winter to a lightweight jacket on early fall mornings and alpine summer evenings. Plus, the fabric has never been better: We worked with Polartec to fine tune the highlow interior grid polyester Polartec Power Dry, making it more breathable and compressible, with an improved feel and durability, while still maintaining its warmth. Two zippered handwarmer pockets sit above the harness line, and offset shoulder seams steer clear of pack straps. This garment has a Slim FitKey Features of the Patagonia R1 Full Zip Jacket: Versatile R1 fleece provides excellent stretch, warmth, wicks moisture and breathes in a variety of temperatures Interior highlow grid fleece enhances compressibility, airflow and dry time Microfiber face speeds dry time and allows for easy layering Off shoulder seam construction reduces bulk under a pack Two zippered handwarmer pockets 6.8 oz Polartec Power Dry 93% polyester 41% recycled7% spandex 377 g 13.3 oz Made in Colombia.