Injured my foot and bought these to help recover. Only worn inside the house for about 3 weeks. Excellent like new condition. I have a narrow foot and the adjustable velcro strap was perfect! From Oofos website: American Podiatric Medical Association (APMA) Approved. Awarded the APMA Seal of Acceptance for promoting good foot health and being of exceptional quality. Soles breathe a sigh of relief each time you slip on the OOFOS® OOahh Sport Flex sandal. Designed to soothe and reinvigorate feet after a tough workout. Helps reduce stress on sore foot, knees, and lower back. Moisture and odor resistant materials. Shower and beach-ready build. Man-made upper materials. Adjustable velcro strap provides a perfect fit. Soft, contouring toe post reduces the likelihood of chafing. OOfoam footbed cushioning technology absorbs impact, cradles the arch, and promotes natural foot movement. Traction pattern at the outsole. Designed for Recovery, Backed by Science. From a pet and smoke free home. Bundle for an automatic discount or "❤" for special discount.