Women's OOFOS OOriginal Thong - Nomad The OOFOS story begins with the OOriginal Sandal. This combination of sleek design and revolutionary OOfoam™ recovery technology lays the groundwork for all future styles and models. DETAILS: Impact-absorbing OOfoam™ technology in OOFOS’ advanced footbed geometry. Rounded, cupped heel designed to enhance impact-absorption and stability with every step. Lightweight, flexible & packable for ultimate travel ability. Machine Washable. Air Dry. OOfoam™ technology absorbs 37% more impact than traditional footwear. Unique footbed design reduces stress on knees, ankles and other joints. Closed-cell foam is machine washable and designed to minimize odor.