An ultra-warm and comfortable layer, the Gapller Down Insulator performs just as well in the in the harshest conditions as it does when chilling off the mountain. The fabric is made from 87% nylon 13% elastane fabric, delivering outstanding stretch and a soft feel. 800-fill Allied Feather down insulation provides maximum warmth and packability, which comes in handy when stashing the Gapller into its own pocket. YKK zippers, a cinch at the hem, zip handwarmer pockets and pit zips allow you to manage temperature with ease.