OOFOS OOriginal Sandle flip flop size unisex Men’s 9 Womans 11 new without tags. Little wear I just prefer the slide to thong style. Message for more info THE ORIGINAL RECOVERY FOOTWEAR The Sandal that started it all. With it’s sleek design and OOfoam™ recovery technology, the OOriginal Sandal was proven to be so effective, it’s spirit lived on in all our later styles and models. You can flex your recovery leaving the gym as much as you can at a backyard hangout with friends.