The LB310 15″ PU Expandable Travel Backpack – Black is a sophisticated and versatile travel companion designed for professionals, students, and adventure enthusiasts. Crafted from eco‑friendly water‑repellent PU and Nylon, it ensures durability, protection, and a sleek modern look. This premium backpack features a built‑in USB charging port with an internal cable, allowing you to charge devices conveniently from a power bank (not included). Its expandable multi‑compartment design provides ample space for laptops, notebooks, cameras, tablets, passports, and personal essentials, keeping everything organized and accessible. Comfort is prioritized with multi‑panel airflow padding and ergonomic shoulder straps, offering stress‑free support during extended use. Integrated top and side carry handles make it ideal for hand‑luggage portability. Compact yet spacious, the LB310 is perfect for commuting, business trips, or outdoor adventures, offering both practicality and peace of mind. Technical Specifications Model / SKU: A21131‑B Fits: Laptops up to 15″ Material: PU + Nylon (eco‑friendly, water‑repellent) Dimensions: 120 × 360 × 430mm (L × W × H) Net Weight: 900g Gross Shipping Weight: ~1.2kg (with packaging) Compartments: Expandable multi‑pocket organizer + padded laptop sleeve Features: Built‑in USB charging port, airflow foam padding, ergonomic straps, top & side carry handles Color: Black Warranty: 24 months What’s Included 1× LB310 PU Expandable Travel Backpack with USB Port – Black Ideal Use Cases Students: Organized storage with charging convenience Professionals: Expandable design for commuting and business trips Travelers: Hand‑luggage ready with water‑repellent PU durability