They look like regular flip flops, but the OOFOS OOriginal Sport Sandal is so much more than that. It's made from OOfoam, a proprietary material that's water resistant and so light it actually floats. But it's not light on support, in fact, OOfoam gives these sandals 37% more shock absorption than comparable materials, which works with the biomechanical design of the footbed to support and cushion every step and even encourage better posture.