OOFOS Unisex OOcloog ClogA versatile clog that brings unmatched comfort into your everyday work or leisure routine. 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. Feel the OO Promise Try any pair for 30 days risk free. If you're not 100% satisfied, you can send them back at no cost.