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---------------------------------------------------------------------- Outer material: canvas Product size: 28cmx16cmx47cm The interior has a cushioned space, so you can safely store devices such as laptops and iPads. Canvas is a natural material that is abrasion-resistant, tear-resistant, durable, comfortable, and breathable, and the more you use it, the more it develops its character. This backpack can be used for a variety of styles, including casual styles, commuting to school, traveling, and camping. It is easy to match with a wide range of outfits. It can also be used as a gift for high school graduation! Genuine leather is used as an accent on the zipper, which will develop more character the more you use it. Canvas, duck, sailcloth. It seems to have various names, but it is apparently a durable material that has been used for ship sails since ancient times. Recently, backpacks made from synthetic fibers have become mainstream. There are probably a variety of reasons for this, such as lightness, waterproofness, and production efficiency. I like the understated and gentle feel of canvas. You have to be careful that the color fades over time and that the backpack gets wet on rainy days. I liked those delicate aspects too. As you take good care of it, you will get used to using it and it will develop more flavor. The reason I like this backpack is probably because I'm similar to it in that I'm clumsy.