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Features nathan sonic boom for iphone4
iPhone4 holder for running.
Sleek armband offers easy-touch window. Ergological™ design integrates NDurAthletic™ and moisture-wicking material.- Unique hybrid of polyurethane and performance textiles deliver enduring protection
- Soft ergo-armband optimizes comfort and eliminates friction
- Moisture-wicking material moves sweat away from body and adds breathability
- Reflective hits promote low-light visibility up to 1200 feet
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