Step into a world of ultimate support, cushioning, flexibility, and built-in arch support, all meticulously designed for your walkability. Vionic's exclusive alignment technology ensures the perfect balance for your entire being. Premium upper materials. Durable synthetic outsole designed to withstand everyday wear across a range of surface. Lightweight, flexible midsole reducing stress on feet, ankles, and knees. Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility. Vionic sandals' built-in orthotic is shown to be effective in helping to treat heel pain caused by plantar fasciitis or achilles tendonitis. 1.125 inch(es) heel height.