Featuring a spacious main compartment with a wide opening, making clothing packing like a breeze. The Blast Travel Backpack equipped with a 180-degree laptop compartment for seamless security checks. 6 independent pockets for additional dedicated space, ensuring less clutter and more organization. Volume: About 28L Size: 12.2" x 16.5" x 8.1" / 31cm x 42cm x 20.5cm Suitable for a 1~3 day getaways Note: Complies with the personal item size regulations of most airlines. Before the expansion: about 28L, 12.2" x 16.5" x 8.1" / 31cm x 42cm x 20.5cm After the expansion: about 38L, 12.2" x 16.5" x 10" / 31cm x 42cm x 25.5cm Weight: 2 pounds / 900g Materials: Nylon Accommodates a 40 oz water bottle. Product Care: Machine washable