s-l400.jpg。In general,recommend that women who wear a ½ size size UP, and men who wear a ½ size size DOWN OOahh - An evolution of the OOriginal, the OOahh slide features our proven foundation of OOfoam technology + patented footbed design with a slide-style strap that has become a best-seller in the OOFOS line OOfoam Technology - Our revolutionary OOfoam technology absorbs 37% more impact than traditional footwear foam materials to reduce the stress on your feet, joints & back. Plus, the closed-cell foam is machine washable and designed to minimize odor Patented Footbed - Our patented footbed cradles and supports arches to reduce energy exertion in the ankles by up to 47% compared to competitors\' footwear. So walking is easier. Recovery is faster. And yOO feel better Research shows OOFOS reduce load, decrease compressive forces, and support foot mobility when compared to traditional footwear. As a result, every OOFOS style carries the American Podiatric Medical Association Seal of Acceptance