Men's OOfos OOriginal Thong - Black The OOriginal sandal features revolutionary OOfoam™ technology that absorbs 37% more impact than traditional footwear foam materials to reduce the stress on your feet and joints. This technology aids in the recovery process and creates an incredibly comfortable sandal you can wear anywhere.  DETAILS: OOFOS are made in whole sizes. We recommend sizing down if you’re a men’s half size. Reduces stress on sore feet, knees, and back  Enables more natural motion  Minimalist construction for light weight  Machine washable