Nathan Sonic Boom - iPhone 4 & 4s
- Designed for iPhone® 4 & 4s (not included)
- Clear window provides music player protection with easy access to controls
- Soft, stretchable armband is stable but not binding
- Moisture wicking for comfort during intense workouts
- Reflective accents for added visibility
- Adjustable to allow for receivers, compatible with Nike + iPod
Nathan Hydration Sonic Boom Carrier for the iPhone 4 & 4s.