Patagonia's R1 Air Crew is a lightweight, breathable and quick-drying technical fleece for high-exertion activities in cold conditions. The 100% recycled polyester fabric is structured for comfort during movement. PRODUCT FEATURES:*275 g (9.7 oz)*5.7-oz 100% recycled polyester jacquard fleece with hollow-core yarns*Fabric is certified as bluesign approved *100% recycled polyester jacquard fleece with hollow-core yarns features a unique zigzag texture that wicks moisture, dries fast and is highly breathable for high-output activities *Off-shoulder seams sit comfortably under pack straps *Left-chest pocket for easy stashing of small items; minimal bulk makes for a great layering piece *Quick-drying woven binding at the back hem and cuffs for added stretch and improved fit *Fair Trade Certified™ sewn Patagonia Men's R1 Air Fleece Crew Sweater40235