I received this item used, but the size was incorrect for me. The dimensions are external measurements: approximately 31cm wide, 26cm high, and 10cm deep. Please note that there may be some variation as it's not a rigid design. I haven't used it, and judging by the condition, I don't think the previous owner used it much either. This series has a simple design with minimal hardware, and the pockets are well-designed, which I think is great. It's in beautiful condition, but it is used, so please understand this before purchasing. Please also take a look at my self-introduction. ^ ^