**Product Specifications:**
**Brand:** Etravel
**Product Name:** Large Capacity Travel Backpack
**Type:** Backpack
**Features:** Lightweight design, high capacity, multi-functional
**Material:** High-quality Oxford fabric
**Design:** Layered design with increased capacity, 180° opening for easy access
**Usage:** Traveling, business trips, leisure
**Size:** 30*16*45CM, 30*26*45CM (expanded)
**Color:** Not specified
**Special Features:** Water-resistant, can be attached to a trolley case
**Additional Details:** Front, side, and back compartments for organized storage
**Closure:** Smooth zipper closure
**Handles:** Comfortable grip handles
**Stitching:** Reinforced stitching for durability
**Accessories:** Built-in USB charging port, shockproof laptop compartment
**Storage:** Multiple compartments for efficient organization
**Style:** Modern and minimalist design
**Usage Scenarios:** Suitable for various travel and daily use scenarios
Please note that product dimensions are manually measured and may have slight errors. Thank you for your understanding.