Offering refined style and classic comfort, these River slippers are sure to be his go-to footwear for evening and weekend relaxation. From Dearfoams. Slip-on, collapsible backs, Energy Return technology, DF Adapt, indoor/outdoor sole Platform measures approximately 1"H Nylon upper; man-made lining; memory foam insole; rubber outsole 1-year Limited Manufacturer's Warranty Imported Dearfoams Men's Closed Back Slipper - River