Designed to reduce stress on feet. ankles and knees. these adjustable slingback sandals are a delight to wear all-day long. High-quality synthetic upper. 3 adjustable straps with hook-and-loop fastening on the vamp for flexible fit. Adjustable heel strap with hook-and-loop fastening for secure wear. Breathable textile and synthetic lining for comfort. Microfiber lined EVA footbed for cushioning. Podiatrist-designed FMT Technology for orthotic support. Back-friendly. limiting over-pronation and alleviating heel pain. Durable rubber sole with unique pattern.