From OOFOS, the OOyea Recovery Platform Slide Sandals feature: OOfoam® technology upper absorbs 37% more impact than traditional footwear Closed-cell foam is machine washable and designed to minimize odor Slide on featuring an agile OOfoam™ strap for additional support and comfort Proprietary footbed design reduces stress on knees, ankles, and other joints, enables more natural motion, and cradles your arches Tread patterned foam outsole Approx. 1.5" platform heel Imported.