The Arch Binder is an elastic wrap similar to an ace bandage that slips over the midfoot and is worn around the arch, offering compression and support in a simple sleeve. The cotton-covered bandage gently compresses, braces, and lifts sagging or displaced foot bones into an improved structural position. The Arch Binder is great for flat feet, painful arches, and pain in the midfoot caused by midfoot sprains, metatarsal stress fractures, and midfoot osteoarthritis. Arch binders may be worn comfortably in all shoes. Washable. Universal left/right. By PediFix. 1 per pack.For proper sizing, please measure the circumference of the mid-foot and use the following chart: Small is for measurements of 18-19 cm or 7-7.5 inches Medium is for measurements of 20-21 cm or 7.5-8.5 inches Large is for measurements of 22-23 cm or 8.5-9 inches XLarge is for measurements of 24-25 cm or 9.5-10 inches Indications - Arch Binders are used in the care and treatment of mid-foot arthritis, arch pain, metatarsal fractures, metatarsalgia, and mid-foot sprains. This also is a great brace to wear after Lisfranc's joint injuries. Here's a link to our return policies and procedures. SKU#: M730 730