Nylon smartphone case for the arm

Material: Waterproof fabric
Characteristics:
1. Suitable for a variety of sports. Comfortable, lightweight, no shaking, no abnormal noise, suitable for running, yoga, cycling, etc.
2. High-quality waterproof cotton material is not afraid of rain
3. Effectively blocks the penetration of sweat and rain during exercise
4. Breathable mesh for comfortable wearing and quick-drying sweat