Alyvisun Airline Cabin Bag 42x30x20, Expandable Travel Backpack 18.9 25.2 L, Hand Luggage Rucksack with Laptop Compartment and Shoe Bag, for Boarding, Working, Travel, Black

[Perfect Size for Boarding] - The size of the cabin bag is 42*30*20 cm, meeting the maximum cabin luggage size standards of most airlines, ensuring a worry-free travel experience. [High Quality Material] -The travel backpack is made from 800D Oxford fabric, which is thick and durable, maintaining its shape even when empty. It features a built-in splash-proof coating that can resist minor water penetration, better protecting your belongings. [Spacious and Practical] - Our travel backpack includes three compartments and multiple built-in pockets, along with a compartment for a 15.6-inch laptop; plus an additional shoe bag, allowing you to easily organize and categorize your items, keeping everything well-ordered. [Expandable Design] - The side zipper opens to expand the capacity, taking into account daily commuting use and short-distance travel. Unexpanded: 42*30*15 cm; Unfolded: 42*30*20 cm, the capacity is 18.9 to 25.2 L, ample enough to meet your different needs for a travel backpack or a daily backpack, and can also be used as a computer bag. [Lightweight and Comfortable] - The back and shoulder straps of the backpack are made of breathable mesh and thick sponge, with adjustable straps that effectively reduce shoulder burden and prevent slipping off. A side handle allows for hand-carrying; the luggage strap on the back lets you secure the travel backpack to a suitcase for easy carrying.