OOFOS OOahh Unisex Slide Sandals Black SyntheticThe OOFOS OOahh is a casual unisex slide sandal that is made from OOfoam technology that absorbs impact and is machine washable. These OOFOS OOahh Black Synthetic Unisex Sandals have the following features: OOfoam technology absorbs 37% more impact than traditional footwear Proprietary footbed design reduces stress on knees, ankles, and other joints Closed cell foam is machine washable and designed to minimize odor 1100