Great Preowned Condition - These have been worn but only a handful of times as can be seen by the soles and the bottom of the flip flops. The arch support is in excellent condition. Podiatrist-designed biomechanical orthotic footbed with deep heel cup helps support and realign the feet back to their natural position. Clinically shown to help relieve common causes of plantar fasciitis heel pain and knee pain related to over pronation and flat feet. Has the American Podiatry Association Seal of Acceptance. Recommended by renowned M.D. Dr Andrew Weil. For women's half sizes go down a size.