**Product Specifications:**
**Brand:** Xiaomi
**Product Name:** Commuter Backpack
**Product Color Options:** Elegant Grey, Green, Light Khaki, Black
**Materials:**
- Fabric: Polyester Fiber (Black), Nylon + Polyester Fiber (Green, Khaki)
- Lining: Polyester Fiber
- Mesh: Polyester Fiber
**Product Dimensions:** 300Ã160Ã450mm
**Net Weight:** Approximately 650g
**Capacity:** 17.3L
**Features:**
- 16L main compartment with hidden outer pocket for organized storage
- Large opening for easy access, fits up to 15.6-inch laptop
- Top quick-access compartment for storing small items like keys, earphones, and glasses
- Hidden vertical zipper pocket for storing documents securely
- Deep waterproof lining pocket for carrying water bottles or umbrellas
- Comfortable carrying experience with skin-friendly and breathable design
- Shoulder straps filled with shock-absorbing EPE cotton for pressure relief
- Sandwich honeycomb breathable back panel for a refreshing feel in summer
- Versatile design suitable for commuting, casual outings, and sports
(Note: The above specifications are based on the provided information.)