Superfeet All-Purpose Medium Arch SupportDeep heel cup works with your body's natural cushioning for maximum support High density closed cell foam Stabilizer cap acts as the base of the insole that supports the rearfoot and provides structure and stability to the foam layer Medium arch orthotic support helps stabilize the foot, reducing stress on feet, ankles, knees, and back YOUR PURCHASE MAKES A DIFFERENCE! Every year, Superfeet donates 1% of sales and 1,000+ volunteer hours to