[2022 Good Design Award / Patent No. 6675726] Bring comfort and excitement to your daily life! When you pull the zipper, it automatically opens with a "snap!" and you can see the inside instantly! It is an item that not only gives you the convenience of being able to take out your luggage quickly, but also gives you a new sense of excitement. By the way, this opening function is a patented Mayu Masa original technology! In addition to functionality such as light weight, storability, and convenience, the round design based on universal design can be used by anyone without any scene. It is a wonderful rucksack that brings not only convenience and newness but also "happiness" to everyday life. The M size boasts a capacity that can accommodate excursions for 2 days and 1 night. And the classic black is versatile for any styling. In addition, even when there is little luggage, the spring ensures the shape of the backpack, so it does not lose its shape, and the wonderful looks that you are carrying on your back are still the same! PC storage is also OK for MacBook Pro 16 inches!