Patagonia Nano-Air Shirt Jacket delivers breathable warmth and lightweight mobility for cool-weather activity. Designed as a versatile shirt-jacket, it balances insulation with air-permeable stretch for active use. Key attributes: Green | Basin Green | Polyester | Breathable (air-permeable stretch) | Durable water-repellent finish | Insulating warmth | Lightweight | Full-length front snap placket | Hidden vertical zip chest pocket | Two zippered handwarmer pockets | Elasticized cuffs | Shirt-jacket silhouette | Lie-flat collar | Long sleeves | Stretch ripstop texture | Dimensions & fit: Regular fit | Composition & care: Shell: 100% polyester | Lining: 100% polyester | Insulation: 60-g 100% polyester | Machine wash cold; do not bleach; tumble dry low; do not iron.