Signature Superfeet shape in a lightly structured, cushioning insole with a low arch profile made to feel like part of your shoes. Flexes and adapts to your foot's natural motion for a smooth, easy ride. Get unbelievable comfort and support without changing how your running shoes were built to perform. Fits well in running shoes and athletic footwear, including zero drop running shoes Fit & Design: Low arch orthotic shape delivers flexible support while running; made to fit well in running and walking footwear, including zero-drop running shoes. Patented Adaptive Comfort Technology™ helps your feet move the way they're supposed to, flexing with the foot for efficient heel-to-toe turnover and a smooth, easy ride Responsive forefoot zone blends cushioning and rebound to maximize energy transfer and help get the most out of every step Moisturewick™ top cover helps reduce odors and keeps feet fresh Energizing heel cushion helps disperse impact with every heel strike, reducing excess vibration to fight fatigue Two layers of Aerolyte™ comfort foam help your foot relax in the shoe and provide optimal cushioning Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first