Superfeet All-Purpose Cushion Size:F (11.5-13) and a straight leg opening

and a straight leg opening

PrimaLoft® Insulation

breathable fabrics and lightweight adjustments to optimize fit and stability

80% recycled post-consumer polycarbonate shell

Superfeet All-Purpose Cushion Size:F (11.5-13) and a straight leg openingUpgrade your shoes with Superfeet FLEX insoles. An excellent introduction to doctor recommended Superfeet shape, the special flex design hugs your feet and cradles your heels to help your footwear, and you, feel great. Durable 4mm thick Aerospring comfort foam delivers heel to toe comfort, while the flexible heel cradle provides structure and stability, reducing stress on feet, ankles and knees. FLEX insoles fit best in athletic footwear.