All the warmth without the bulk. Inspired by a vintage Oakley piece, the men's Hyland O-Puff Vest is a high-collar, quilted piece filled with 3M ™Thinsulate ™insulation for thin, lightweight warmth. We treated the vest with Hydrofree DWR to shed fabric moisture and prevent cold, clammy skin, and waterproofed the material for the ultimate winter-ready layer. Zippable hand pockets let you stash mitts and more, an adjustable drawcord hem helps retain heat.