This is a Paul Smith waterproof backpack. It's quite large and seems convenient because it's waterproof. Regarding the size, I measured it in the state shown in photo 1: Width: 43 cm Height: 51 cm It's quite large. It seems good for everyday outings, but I think it would also be suitable for people who commute by bicycle, Uber Eats delivery people, or as a backpack for going to the beach. It's made of a waterproof material, which is unusual, but there are some areas where the material has become white. Please check the photos. Also, there is a crack-like part on the "waterproof" tag, so please check this in the photos as well (image 3).