Heel Height Approx. 2.5 inch wedge heel , 1.5 inch platform Size US Men's 9.5 , Women's 11 Engineered with Vionic's advanced recovery system (VRX) and designed to balance ultra cushioning, support and stability, this lightweight recovery slide features an adjustable strap, 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 outstanding traction, ensuring a secure grip on various surfaces. Adjustable strap to ensure perfect comfort and fit . 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