- polyester
- Great insole is perfect for athletes into walking, running and jogging
- Has Spenco’s best combination of shock absorption and energy return
- Provides lightweight PolySorb arch and heel support with SpenCore covering
- Extra cushioning and support improves athletic performance
- Features maximum shock absorption and repetitive rear foot impact
Spenco Walker Runner Insole For walking, running and jogging. Special ‘heel strike’ cushioning delivers optimum shock absorption for repetitive rear foot impact. 4-Way Stretch Fabric with Ultra-Fresh Silpure Antimicrobial helps prevent blisters while controlling odor. Air Injected Spenco Material. A 5/32-inch layer of this material absorbs shock and impact to provide intense comfort and cushioning. Molded Polyurethane.