ZSP1024: Features: -Helps control stabilize and balance the foot. -Heat moldable for a custom fit. -Spenco Material absorbs shock and reduces friction to improve overall foot comfort. -Unconditionally guaranteed for one full year. -Firm customizable support for casual and athletic shoes. -4-Way stretch fabric with ultra-fresh silpure. -Doctor recommended Spenco RXTM products with exclusive air-injected. Specifications: -Available in several sizes:. -Women 3-4. -Women 5-6. -Women 7-8, Men 6-7. -Women 9-10, Men 8-9. -Women 11-12, Men 10-11. -Men 12-13. -Men 14-15.