I think it's a 3L size. It's about 320*230*100mm. I received it from a friend about two years ago, and although I haven't used it very often, the surface has some wrinkles because it was stored horizontally (photo 1). The inside has some creasing. I used it with an X-T5 + standard zoom lens and a spare battery. It's small and very easy to use. It's a used item, so please consider it if you are interested.