High-Quality Material: The extra-large backpack is made of durable and high-quality water-repellent fabric for men and women; Dimensions: 51 x 34 x 26 cm (20.1 x 13.4 x 10.2 inches), the backpack can hold up to an 18-inch laptop, and can of course easily accommodate a 17.3-inch laptop; Weight: 3.08 LB Note: this is an extra-large backpack, not a full-size backpack. Multifunctional Compartment: There are multiple multifunctional compartments in the backpack that provide enough space for your laptop, iPad, mobile power, A4 files, wallet, pens, cards, clothes, etc. The external elastic mesh pocket on the side of the backpack can hold your umbrella and water bottle. USB Charging Port Design: The backpack has a built-in USB port that allows you to easily connect to your mobile power supply to charge your phone. (excluding mobile power supply). Travel & Friendly: No Grant woven luggage straps are perfect for attaching your laptop bag to a luggage cart, and TSA friendly allows you to save time at security checks. The RFID pocket protects most ID cards, credit cards, and passports. Multi-Scene Functionality and Use: This practical backpack has a sturdy handle, adjustable strap, and reflective strip on the front of the backpack to protect you when cycling, running, or walking at night. This portable backpack is large and durable and is ideal for college, travel, business, daily use, and outdoor activities.