Nylon mobile phone arm bag

Fabric: Waterproof fabric
Features:
1. Suitable for a variety of sports. Comfortable, lightweight, no shaking, no abnormal noise, suitable for running, yoga, cycling, etc.
2. High-grade cotton waterproof material is not afraid of rain
3. Effectively block sweat and rain infiltration during exercise
4. Breathable mesh for comfortable wearing and quick-drying perspiration