From OOFOS, the OOahh Plus Slide Sandals feature:  OOfoam® technology upper absorbs 37% more impact than traditional footwear Proprietary footbed design reduces stress on knees, ankles, and other joints, enables more natural motion, and cradles your arches Elevated arch and formed heel cup cradle the foot Raised rim design protects the heel and toes Tread patterned foam outsole Imported.