Lightweight and ultrapackable, the hybridized R1 Vest offers just the right amount of core warmth for high-output days in the mountains. Built from Polartec Power Grid fabrics with HeiQ Pure odor control for outstanding stretch and breathability. Made in a Fair Trade Certified factory. | Patagonia Men's R1 Fleece Midlayer Vest in Aquatic Blue, Small - Polyester/Spandex