Wolverine DuraShocks® cushion insoles utilize space age technology for superior comfort and shock absorption. A unique cushioning material is positioned in the critical heel strike area to provide superior shock absorption on impact and reduce foot fatigue. For added comfort, the insole in contoured to the shape of the foot using soft, flexible polyurethane foam. Wolverine DuraShocks® insoles are covered with a durable fabric which draws moisture away from the foot and reduces odor-causing bacteria. These insoles are designed as replacement insoles for Wolverine DuraShocks® footwear only and may be too thick to wear in conventional footwear.