Tide II features Vio-Motion Support with a fit you've come to love and expect! This iconic, best-selling style now features leather trim and an updated tread pattern. Proven to effectively alleviate heel pain.* Soft woven toe post and foam-lined strap ensure a comfortable fit. Vionic Technology is biomechanically designed to hug your arches and support your feet in comfort. Vionic sandals' built-in orthotic is shown to be effective in helping to treat heel pain (plantar fasciitis). Lightweight, flexible medium-density EVA midsole absorbs shock, reducing stress on feet, ankles and knees. Durable TPR outsole with patterned tread helps improve traction. Upper: Leather and Textile or Natural Cork and Textile or Synthetic and Textile.