Large capacity and light weight: This carry-on backpack offers plenty of space for all your travel essentials. It has multiple storage compartments, storage bags, and side pockets. Dimensions: 20.08 x 11.81 x 7.48 inches. Depending on the packaging method and contents, the actual usable capacity is between 38-40L. The body weighs only 0.9 pounds. Convenient storage: You can access the main compartment from the quick-access front pocket for easy access to your travel essentials on the go, and the main compartment can also be unzipped like a suitcase for easy packing and unpacking; The technology compartment holds a 15.6-inch laptop and a 13-inch iPad and accessories; Front, upper and side pockets for easy access to glasses, documents and travel fluids. The exterior metal double zipper design is durable and resistant to oxidation, with a reflective tape for night travel and a trekking pole hook on the outside. Water-repellent fabric is not afraid of splashing: the tear-proof and water-repellent polyester body, dense mesh weaving effectively blocks rainwater infiltration, and is equipped with a rain cover that is not afraid of light rain outdoors. Ultra-comfortable and easy to carry: The S-shaped design relieves pressure and thickens the sponge, reducing suffocation and providing superior ergonomic comfort. The adjustable chest buckle helps reduce the weight on the shoulders, and the sunken back breathes so you feel relaxed and comfortable at all times.