Cabiniste REI Down Booties Men's Slippers Fleece Non-Slip Insulated Large 10-11 New with Tags as pictured. Insulated with durable, responsibly sourced duck down for maximum comfort and lightweight compressibility; down is Responsible Down Standard-certified Nylon face fabric has durable water repellent (DWR) on the exterior and a water-resistant polyurethane coating on the back for light protection from water and weather EVA foam midsoles provide just enough cushion underfoot Nylon soles with nonslip polyester beads ensure traction indoors Internal elastic bands provide a comfortable yet secure foothold Bootie cuffs can be rolled down for a shorter styling