CUSH BOOTY is different than a standard slipper - it&&';;s a sleeping bag for your feet!(TM) With soft nylon uppers, cozy insulation, elasticized lockable ties and a durable nylon bottoms - CUSH BOOTY is ideal for around the house or when travelling. Equally comfortable on planes, runs to the mailbox and on winter camping adventures, CUSH BOOTY marries indoor comfort with outdoor lifestyle. Insulation level: Fixed-fit multi-layer inner boot system Waterproof level: B-Tek Dry water resistant lightweight Vegan Technology Upper: Soft nylon insulated upper Elasticized lockable tie with drawstring toggle Ankle height, slip-on style for ease of entry Base: Slip-resistant, durable nylon bottom Insulation: Fixed PolyWool footbed for breathable warmth Specifications