From OOFOS®, the Men's OOAHH Sport Flex Sandals feature: Synthetic upper An evolution of the OOriginal, featuring an agile OOfoam™ strap for additional support and comfort. 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. Adjustable hook-and-loop 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. Closed-cell foam is machine washable and designed to minimize odor. Imported.