DESIGN: Wear all the way up as a cozy boot or fold down to show off the fleece lining and wear as a slipper/shoe; Pull-on design for easy on and go MATERIALS: Premium, quilted nylon upper for comfort you can see and feel; Fleece lining for soft warmth COMFORT: Light flexible underfoot cushioning springs back after each step; Fleece lined collar for comfort and warmth in colder environments CONSCIOUSLY CREATED: Washable recycled PET polyester fibers KEEN Contoured Fit curves with the natural shape of the foot for a more secure fit while allowing room for toes