Designed as a mid-layer for when temperatures begin to drop Engineered fabric and articulated patterning designed specifically for alpine comfort and mobility Lightweight yet durable FuseForm nylon fabric transitions from a micro-ripstop to a mini-ripstop for targeted durability Digital ink jet print provides intentionally placed color for a unique visual High Quality 800 Fill RDS Down (certified by Control Union) provides compressible warmth Unibody construction minimizes cold spots