Designed to keep you at the optimum temperature when you're working hard, the Nano-Air® Light Hybrid Jacket is crafted from .6-oz 30-denier 100% recycled polyester with four-way stretch and a PFC-free DWR finish. Durable and lightweight, this insulated jacket is filled with 40 grams of Patagonia's FullRange™ synthetic insulation and features a functional fit with articulated patterning for freedom of movement. Perfect for your next adventure, it is sure to keep you comfortable on the trail or on your next climb.