Sizes: 4.5W, 8.5MDesigned For: Swollen Feet, Bunions / Hallux Valgus, Toe Problems, Hammertoes, Sore Feet, Extra Wide Feet, Diabetes, Arthritis, Orthotic ShoesFeaturesVery LightweightSeamless Stretch Upper made with Pedoprene™Single Strap ClosureRemovable InsertsMachine WashableWidths Available: Medium, Wide, X-WideBenefitsLightweight materials ensure that feet don't tire throughout the dayStretch uppers form around bunions, hammertoes, crossed-toes