[ EXPANDABLE DESIGN ] Dimensions: 18.9 x 12.6 x 7.1 - 9.4 inches. FENRUIEN 17.3 inch laptop backpack can increase your storage space by up to 20%, providing you with plenty of room to store your essential items without worrying about running out of space [ LONG-LASTING & STURDY ] Made with PC & ABS hard shell and Oxford fabric, this gaming laptop backpack is water resistant and scratch-resistant, providing full protection for your laptop and belongings [ SECURE & ANTI-THEFT ] The business travel backpack features a double layer TSA customs lock and hidden zipper design that ensures your bag and belongings stay safe during travel, providing peace of mind wherever you go [ COMFORTABLE & CONVENIENT ] The comfortable and breathable back panel and adjustable shoulder straps provide all-day comfort, so you can focus on your trip [ VERSATILE & PRACTICAL ] This tech backpack is equipped with USB-A and USB-C charging ports to meet your different needs, allowing you to easily ch