Large capacity and compatibility - Holds smartphones up to 7 inches. Provides space for a power bank, sunglasses, bicycle light, and other small essentials. TPU touch screen window and sun visor - TPU window offers high sensitivity and transparency, allowing easy touch operation of your phone through the window. - Sun visor reduces glare and enhances screen visibility while riding. - The window also supports displaying a card on the phone as needed. Waterproof design - Waterproof construction protects contents during rainy rides and wet conditions. Colorful reflective design - Colorful reflective elements increase visibility and safety for night or low-light riding. Practical use scenarios - City daily commute: Keep your phone accessible for navigation and quick calls, along with essential small items like a power bank or sunglasses, without removing your phone from the bag. - Weekend cycling trips: Convenient storage for everyday carry items and lightweight gear, with the ability to operate your phone through the window if needed. - Night or rainy rides: Reflective design enhances visibility to others, while the waterproof feature helps protect your belongings from rain.