• 【Expandable Design】Featuring a unique expandable design, this backpack can increase from 13L to 23L capacity, adapting seamlessly from daily commute to short business trips.
• 【Dual Fast Charging Ports】Equipped with integrated USB and TYPE-C charging ports on the side, allowing for convenient on-the-go charging (supports for  iPhone 16 fast charging).
• 【Eight Functional Pockets】Efficiently organize your belongings with 8 dedicated compartments, including a large main compartment, padded laptop sleeve, wet/dry separation pocket, and signal blocking pocket.
• 【Reflective Safety Feature】Incorporates reflective fabric into the shoulder straps, ensuring visibility and safety during night walks or cycling without compromising aesthetics.
• 【Ventilated Back Design】Features a breathable back panel with airflow channels to prevent sweating and maintain comfort during extended wear.
• 【Luggage Strap for Easy Travel】Designed with a rear luggage strap, this backpack can be easily attached to your suitcase handle.

Specifications:

• Model: 6634
• Material: Oxford fabric + PU leather
• Weight: 1100g
• Capacity: 13L before expansion/23L after expansion
• Size: 43*30*(10-18)cm
• Maximum laptop size: 39*27*3cm