Tide II has the same amazing Orthaheel Technology and fit you've come to love and know from Vionic! This best-selling style now features leather trim and an updated tread pattern which makes you feel stylish and sexy! Proven to effectively alleviate heel pain. * Soft woven toe post and foam-lined strap ensure a comfortable fit. Orthaheel 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. Woven/leather uppers with padded neoprene upper liner.