Mens Sof Sole Athletic Insole Hydration Accessories The Ja Fly 4 is

The Ja Fly 4 is specifically designed for sprint events

The best all-round stopwatch in our range - suitable for all coaches and trainers

Flexible Upper Material: The upper is constructed with a combination of Polyester Lycra Stretch Mesh and Polyester Microfiber

Durable Upper: Synthetic leather construction ensures long-lasting performance and maintains its shape even under intense use

These sox also have seamless toes which makes them very durable and removes a common source of irritation

Mens Sof Sole Athletic Insole Hydration Accessories The Ja Fly 4 isThe Sof Sole Athletic is the preferred insole for anyone looking to improve the performance and comfort of their footwear. TECHNOLOGY The Sof Sole Athlete Performance Insoles are a full length, trim to fit, flat cushioned insole that is suitable for all arch types