Thank you for viewing. I bought these for use around the neighborhood, but I didn't end up using them as much as I thought I would, so I'm putting them up for sale. This is the Ooriginal, the most classic model from OOFOS, a simple thong-style sandal. The special OOfoam material used in OOFOS products differs from the typical EVA midsole, which is designed to generate forward momentum. Instead, it absorbs 37% more impact, reducing the shock to the soles of your feet upon landing. This helps to reduce the burden on your knees, hips, and back. Furthermore, the ergonomically designed footbed gently cradles your feet and provides firm arch support. Unlike inexpensive EVA beach sandals on the market, OOFOS uses a patented, high-density footbed (sole) made with harmless materials and dyes, providing a very comfortable wearing experience.