OOFOS OOriginal Women's Navy Help your hard-working feet recover better with the Oofos OOriginal Sandals. These flip-flop style sandals feature OOfoam® Impact Absorption Technology that helps absorb 37% more impact than your regular footwear. This special technology helps reduce the stress on your feet and helps aid the recovery process after physical activities and sports. Reduces stress on feet, knees, and back. Promotes a more natural foot motion. Features a minimalist, lightweight construction. Shower/beach-ready; moisture and bacteria resistant; will not retain smell. *If you normally wear a half size: Women: order a half size UP for best fit. Men: order a half size DOWN for best fit. Sizing Featured in Whole Sizes.