The Kenai is a mummy shaped sleeping bag that is extra wide and extra long, so you have plenty of wiggle room to roll around. With the 2-layer construction designed to eliminate cold spots and the techloft insulation The Kenai series are filled with, you'll get a comfortable night's sleep. Techloft insulation consists of multi-hole staple-length micro-denier fibers that have a siliconized finish for maximum insulation, loft, and compactness. There is an insulated chest and zipper baffle to make sure your heat stays inside the bag with you.