OOFOS unisex Recovery Sandals in black. Oofoam technology absorbs 37% more impact than traditional footwear, reducing stress on knees and ankles. Oofos don't come in half sizes, and though these are marked as a men's 10 women's 12 they actually fit a men's 9.5 or women's 10.5. Footbed measurement in photos. These cute, comfortable flip-flop sandals are in great condition with minimal wear.