The Nathan Sonic Boom Armband sleek armband offers easy touch window. The ergological design integrates NDurAthletic and moisture-wicking material. Express yourself with fresh color updates bound to add more spring to any step.
- Soft Ergo armband optimizes comfort and eliminates friction
- Unique hybrid of silicone and performance textiles deliver enduring protection
- Moisture-wicking material maximizes sweat resistance
- Reflective hits promote low-light visibility up to 1200 ft.
- Fits the IPhone 4/4S
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