The Expandable 45L Carry on Travel Backpack by NEXIVOY is a large capacity TSA friendly laptop backpack designed for 18.4" laptops. Made of durable nylon blend material, this backpack features adjustable shoulder straps, anti-theft design, and an ergonomic laptop compartment. With a 45L storage volume and 7 pockets including an electronics pocket, external media pocket, keys pocket, and passport pocket, this backpack is ideal for travel and college use. The black backpack has a solid pattern, hard shell design, and is water resistant, making it a reliable and practical choice for carrying your laptop and other essentials while on the go.