OOFOS Ooahh Slides are slip-on after-sport slides that provide unparalleled impact absorption, superior arch support and unbelievable comfort. They're ideal for post-workout recovery. Built from Oofoam, which absorbs 37% more shock than the popular EVA foam, these thongs reduce stress on sore feet, knees and back. They feature arch support for most foot types and a biomechanically engineered footbed that allows for natural motion. Ooahh Slides are also: Comfortable - with a soft and conforming toe to eliminate chafing Waterproof - so you can take them in the shower or to the beach Antibacterial - these flip flops don't smell or grow bacteria Durable - with foam that retains its cushioning and support over time Lightweight - so much so that they float in water! Machine-washable - for convenient cleaning Recognised by APMA (American Podiatrist Medical Association) - with the Seal of Acceptance for benefiting foot health Greens approved - by Lawn Bowls Australia. If you’re looking for a recovery shoe that offers significantly more comfort and durability, then consider the Ooahh Slides. SIZING All OOFOS styles are shown in US sizes. If you normally wear a whole size, order the same whole size OOFOS. If you normally wear a half size: Women should order a half size UP for best fit. Men should order a half size DOWN for best fit.