The Sitka Men's Kelvin Aerolite Jacket in Optifade Subalpine is a versatile, lightweight, compressible jacket that will keep hunters warm without taking over their pack. It works well as an additional layer under a shell into late season, or a nice outer layer for hunts, scouting, or everyday use in mid-temperatures. The Kelvin Aerolite Jacket provides the compressibility and warmth of down insulation but stays warm when wet thanks to its synthetic PrimaLoft Gold Insulation with Cross Core technology. PrimaLoft Gold Insulation with Cross Core technology stays warm when wet but is as packable and insulating as down Insulation is 35% recycled Insulation is extra lightweight thanks to its infusion of silica aerogel, which adds warmth but is composed of 95% air 20-denier polyester face and backer Face won't wet out thanks to Durable Water Repellent finish, helping it resist light rains Gusseted stretch cuffs keep out of the way of shooting and make for smooth layering Hood is fitted to provide warmth and camouflage without inhibiting eyeline Zippered chest pocket is deep for storage of essentials Weight: 16 ounces