Superfeet Green offers maximum support, balance & shock absorption for industrial & athletic footwear! Superfeet Green Performance Insoles comfort and support the natural contour of your foot to help neutralize pronation and reduce impact. They provide the ultimate in support, balance and shock absorption. The patented design follows your foots curvatures to center the heel, balance body weight, take stress off joints/muscles, and help prevent pain. The rear-foot control point helps reduce overpronation and keep correct alignment to lessen strain on knees, ankles, hips and lower back. Mid-foot control point enhances stability to promote proper landing. The three-part shock absorption system features a heel cup to center the foots fat pad, a slight rocker bottom to allow some foot roll, and a soft side to accommodate soft tissue expansion. Durable foam with special Holofiber top cover for long-lasting comfort. Full-length design offers complete foot coverage. Other Important Information: Fits normal to high arch feet. Ideal for work boots, ski boots and hiking/running footwear. Recommended for use in shoes with removable insoles. Material Content: Woven polyester, HolofiberTM, polyethylene foam, polypropylene shell.