"Vionic Mar Ankle Strap Charming details, luxurious materials, lightweight, contoured footbed, and adjustable ankle strap, Mar is the perfect summer sandal. Designed with exclusive alignment technology to balance the whole you. 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. Premium upper materials Durable synthetic outsole Adjustable hook and closure Flexible EVA midsole Approx. .75"" heel height Imported"