This 2-way Boston bag can be expanded in size according to the amount of luggage. An added bonus is that it comes with a carry-on belt! Water-repellent finish, so you don't have to worry even if it gets wet*. The bag can be adjusted to a normal size on the way to the airport and to an expanded size on the way back home when you need to carry more souvenirs. Inside, there are two open pockets and one zipper pocket. One zipper pocket on the outside back side is recommended for storing a smartphone or other small items. Lightweight at approximately 330g despite its large capacity! [Materials] Nylon [Size] Width: 57.5cm / Height: 29cm (normal) / 42cm (extended) Gusset: 21cm / Handle height: 22cm [Specifications]. Opening: Zipper Inside: 2 Open Pockets, 1 Zipper Pocket Outside: 1 Zipper Pocket [Weight] Approx. 330g