Premium upper materials Durable rubber outsole designed to withstand everyday wear Lightweight flexible EVA midsole absorbs shock reducing stress on feet ankles and knees Adjustable straps with hook and loop closure to ensure perfect comfort and fit. Microfiber-covered footbed that offers a smooth feel and enhanced breathability 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 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.75 heel height