Our best seller, the Retention Jacket features super lightweight, full stretch insulation on the front with soft, stretch fabric on the back and arms. With a high warmth-to-weight ratio, it is perfect for those mild to cool days. 84% Polyester, 16% Elastane, 100% Polyamide, Ergonomic stand up collar with chin guard, K logo on collar and right shoulder, Full-stretch back and sleeves, Insulated front with quilting, Moisture-wicking interior lining