Spenco (#SPFH) Polysorb Flow Warm 37 - 789 - One Pair 

Performance, comfort and support with foot warming technologies walkers, runners and joggers seeking additional performance, comfort and support in a warm, just right environment. lasting warmth and performance. increased shock absorption and heel strike protection. reduced friction to help prevent blisters. increased energy return for improved athletic performance.

• Reflective thermal barrier foil layer retains natural body heat
• Outlasttreated top cloth with aegisantimicrobial helps store and release heat for a just right microclimate aegis
• Concave heel pad and air channel technology circulates air flow for optimum warmth by limiting hot spots
• Spencoeva contour provides cushioning, support and heat insulation