HEROIC KNIGHT Slim Expandable Laptop Backpack 17 Inch with USB Charging Port, Anti Theft Waterproof Lightweight Rucksack for Men, Business Travel Work College Daypack, 27L Capacity Black

【Slim & Expandable Design】This men's backpack combines a sleek, slim profile with a cleverly expandable main compartment. Increase the capacity from 27L, allowing the main storage area to extend from 48 x 32 x 8 cm to 48 x 32 x 19 cm. When you need to carry extra gear for travel or the gym, all while maintaining a professional and streamlined look when not expanded. 【Integrated USB Charging Port】This Smart rucksack stay connected on the move. The external USB port of this business laptop backpack allows for convenient charging of your smartphone or devices. Simply connect your power bank to the built-in cable inside the designated pocket, and you can charge without ever opening your backpack. 【Durable & Water-Resistant】Built to last, this mens backpack is constructed from high-quality, tear-resistant Oxford polyester fabric with a water-resistant coating to protect your electronics and belongings from light rain and spills. Heavy-duty YKK zippers of this stylish backpack ensure smooth and reliable operation for years to come. 【Anti-Theft & Secure Storage】This laptop bag designed with security in mind, a hidden anti-theft pocket at the back protects your valuables like wallets, passports, and cards from pickpockets. Inside, a secure and padded compartment keeps your 17-inch laptop and 12.9-inch tablet shock-proof and firmly in place. 【Lightweight & Comfortable for Daily Use】This work backpack ergonomically designed for comfort, the breathable mesh back panel and padded, adjustable shoulder straps alleviate pressure and provide superior airflow, reducing sweat and strain. The tech backpack is perfect for long commutes, business trips, and campus life.