**Product Specifications:**
**Brand:** BOPAI
**Brand Ambassador:** Xiong Ziqi
**Collaboration:** Duo Jiu, FA. PATTERN, SSAFFAIR
**Design Features:**
- One chain opening for instant expansion
- Downward V-shaped zipper opening with 5cm thickening for increased capacity
- Widened by 5cm when chain is opened
- Large area for breathable heat dissipation
- Splash-proof material for rain resistance
- Note: USB components are electronic accessories, do not soak in water
**Functionality:**
- Practical storage with segmented compartments
- Dedicated laptop pocket for easy access
- Hidden zipper pocket, keychain holder, and separate padded laptop compartment
- Side pocket for convenient access to laptops, shockproof and abrasion-resistant
- Back strap for securing to luggage handle, no need to carry on back
- Hidden water bottle holder with elastic band for stability
**Dual-Use Pack Specifications:**
- Dimensions: 29cm x 16cm x 45cm
- Weight: 1.3KG
- Colors: Black, Blue, Blackish Green
- Material: Ultra-fine fiber synthetic leather + fabric
- Capacity: 20L
**Additional Information:**
- Size measurements may have a 1-3cm error due to manual measurement
- Available in Black, Blue, and Blackish Green, as worn by celebrity endorsers
*Warm Reminder: Please refer to the actual product for accurate details.*