The OOfos Unisex OOahh Recovery Slide is an evolution of the OOriginal, featuring an agile OOfoam strap for additional support and comfort. This shoe features revolutionary OOfoam technology that absorbs 37% more impact than traditional footwear foam materials, reducing stress on your feet and joints. The OOfoam is biomechanically designed to allow natural motion, and the soft, conforming toe post eliminates toe chafing. The shoe is also shower and beach-ready, with moisture and bacteria-resistant properties that prevent the buildup of smell. It's machine washable and durable, with a long-lasting cushion. If you normally wear a half size, women should order a half size up for the best fit, while men should order a half size down. Running shoe sizes can vary slightly from brand to brand, so it's recommended to wear at least half a size bigger than your regular shoe size.