Designed to break the mold, engineered with Vionic's advanced recovery system (VRX). This lightweight recovery sandal balances ultra cushioning, support and stability, and features a massaging footbed and dual-density cushioning. Designed for full body recovery, VRX advanced recovery technology combines revitalizing cushion with supportive stability. Tested by Heeluxe: the footwear industry gold standard, Heeluxe uses patented technology to analyze comfort and performance against competitive styles, in conditions that duplicate real-world wear. Durable rubber outsole offers a secure grip on various surfaces. Sturdy thong toe post for a comfortable grip. Oversized sidewall and deep heel cup for maximum stability. Dual-density cushioning: high-density core and soft layers function in tandem for active-recovery support . Podiatrist-developed biomechanical eva footbed contours texturized for massaging relief. Built-in vio motion technology footbed featuring contoured arch support and forefoot flexibility. Helps correct pronation and promotes full-body alignment and many different types of foot ailments. For optimal comfort, wear your new Vionic shoes for a few hours to let your feet adapt. Within 1-2 weeks, you should experience full orthotic comfort and support. Received (APMA) american podiatric medical association seal of acceptance.ImportedSole: RubberHeel height approx. 1 inches