The Spenco PolySorb Cross Trainer Shoe Insoles provide the best combination of shock absorption and energy-return. This powerful duo works together to provide lasting comfort, help prevent injury and relieve foot pain. Spenco's proven cushioning and support improves athletic performance and prolongs the life of your shoes. Ideal for running, walking, training and sports.

• 4-Way Stretch Fabric with Silpure Antimicrobial helps prevent blisters while controlling odor
• SBR Forefoot Cushion provides superior cushioning and energy return for high impact sports
• 5/32" layer of SpenCore material absorbs shock and impact to provide intense comfort and cushioning
• Lightweight PolySorb Polyurethane Foam provides arch and heel support
• SpenCore Heel Plug provides extra cushioning and shock absorption in the heel