Medium arch signature Superfeet shape adds stability and comfort to your shoes, reducing stress on feet, ankles, knees, and back. Improves efficiency, reduces fatigue, and supports every step. Responsive EVOLyte® carbon fiber cap and a thin layer of Aerospring™ Rebound comfort foam for a versatile fit combine to create smooth and efficient energy transfer throughout your gait, from foot strike to toe-off. Made to replace the removable liner in moderate to tight-fitting shoes.. PRODUCT FEATURES. HEEL CUP. Positions and cradles the heel to optimise natural shock absorption and minimise fatigue.. MEDIUM ARCH SUPERFEET SHAPE. High arch orthotic support helps stabilise the foot as you move, reducing stress on feet, ankles, knees, and back.. DURABLE CONSTRUCTION. Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months.. MOISTUREWICK™. Top cover helps reduce odours, made from 100% recycled materials.. H.I.T. (HEEL IMPACT TECHNOLOGY) POD. Disperses impact at heel strike for an easier ride.. EVOLYTE® CARBON FIBRE STABILISER CAP. Proprietary carbon fibre and polymer blend responds to compression, springing back to its original shape for responsive, weight-defying support.. AEROSPRING™ REBOUND COMFORT FOAM. Single-layer cushioning foam delivers a versatile fit.