Women's ballet flat premium upper materials,0.4" heel height, Imported Durable synthetic outsole designed to withstand everyday wear Removable lightweight EVA insert, it's recommended to wear your new pair for a few hours to allow your feet to adapt to the new support Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock-absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility Vionic flats include full underfoot contact to reduce pressure with every step, helps alleviate heel pain caused by plantar fasciitis or Achilles tendonitis