Long-lasting support packed into a thinner insole, the Superfeet All-Purpose Support Medium Arch Insoles are made to improve the overall fit and comfort of a wide range of footwear. The orthotic shape and reliable support make the blue medium arch one of the most popular Superfeet insoles year after year. Made to replace the removable sockliner in roomy to moderate-fitting footwear. Trim to fit your shoe size. Superfeet All-Purpose Support Medium Arch Insole Features: Heel cup cradles the heel to optimize natural shock absorption Medium arch orthotic support helps stabilize the foot, reducing stress on feet, ankles, knees, and back Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles All-natural coating helps eliminate odor-causing bacteria The thinner shape acts as the base of the insole to support the rearfoot and provide structure and stability Closed-cell foam provides a firm foundation to support the foot for long-lasting comfort