Description The GOHUNT Down Booties are a purpose-built insulation piece for kicking around camp on cold days, or when you&';re sitting on a glassing knob and want to keep your feet extra warm. Designed to provide maximum heat retention while being packable and lightweight. These booties are designed to fit over your sock, and not over your boot. Made from 94% down cluster and 6% feather, the combination of baffle size, 900 fill power, 1.99 oz fill weight of down, and cluster percentage creates a massive amount of dead air space, ultimately providing greater heat retention. A cinch cord in the back to help lock in heat. The exterior fabric is a durable, tightly woven 20D nylon with a water-repellent finish to bead and discard light precipitation. The bottom under your foot is reinforced with a soft foam sole for added structure, with gel traction for grip. And the material is reinforced for added durability. Sizing Sizes Boot Size Range Bootie Measurement Small/Medium Up to 10 Length: 11.25"Width At Widest: 4.75" Large/X-Large Size 10.5 to 12 Length: 12"Width At Widest: 5" Specs Weight 8.5 oz. (size large/x-large) Fill Power 900 Insulation Type RDS-certified goose down Fill Material 94% down cluster, 6% feather Fill Weight 1.99 oz Cinch cord Cinch the cord in the back to lock in heat Face Fabric 20D nylon Exterior Treatment Fluorine-free water-repellent finish