ELECOM Backpack with Expandable Gusset and Compression Function, Perfect for Business Trips, 15.6-inch Capacity, 180° Full Opening, Black,

The air is easily released by simply pressing with your hand, and the check valve prevents air from escaping, ensuring secure compression. This makes preparing for a busy business trip or trip a breeze. By removing the air from inside the bag, clothes are compressed and can be stored compactly. This neatly organizes your luggage, leaving you with more room in your bag. With an expandable function, it can hold approximately 30-40L of luggage. No need to worry if your luggage increases while you're out and about. This large-capacity bag can hold enough clothes for three nights and four days, and is carry-on sized so you can take it on the plane as is. Please note that carry-on sizes vary by airline, so please check the product dimensions beforehand.