Sierra Designs Down Bootie Black Extra Small. Made with a tricot liner and durable recycled polyester taffeta that cinches at the cuff to seal out drafts these booties are like bringing your favorite house slippers to the hut the campsite or on errands around town. And with a non-slip PU sole PFC-free Durable Water Repellent (DWR) coating and a foam midsole to support your weight theyre sturdy and substantial for impromptu wanderings inside or out. Specifications for Sierra Designs Down Bootie: Manufacturer: Sierra Designs Gender: Unisex Age Group: Adults Toe Type: Boots Activity: Casual Outdoor Fabric/Material: 50percent Recycled Nylon/50percent Nylon Ripstop with DWR finish Seasonal/Temperature Use: All Seasons Insole Material: Polyurethane Weight: 9.5 oz Insulation: DriDown Lining Material: Tricot Features of Sierra Designs Down Bootie Silicone bottom sole grip for added traction Cinch cord cuff to seal in warmth Durable oxford sidewall Package Contents: Sierra Designs Down Bootie Sierra Designs 44594823BK-XS: Down Bootie Black Extra Small