A large-capacity rucksack that can be used for multiple purposes from the upper grades of elementary school to the elderly I wanted to make it an item that is regardless of age or gender, so I put it together in a basic sporty design. Functionality also includes business functions such as 15-inch laptop storage pockets, rain covers, and pen holders, as well as valuables pockets, General functions such as a key chain attachment D-ring, two-layer storage of the main body that is active in sports scenes, etc. It is designed to be used in all situations. Removable rain cover Sudden rain or snow. Even if you can hide your body with an umbrella, your backpack tends to get wet. A rain cover that can be quickly taken out is very convenient at such times. If it's a little time, I'll just move as it is. If you walk for 10 or 20 minutes in heavy rain. It gets quite wet. Also, For example, on a windy day. Leave your backpack on the playground. When I came back, it was pure white with sand and dust. What a day. In such a case, if you protect it with a rain cover, you can keep your backpack in good condition. If it gets dirty, you can remove it from your backpack and wash it dry, so you can use it cleanly at any time. Bottom pocket I made it a two-tier type to put in the items I wanted to store separately from other luggage. The pocket height is 12cm, but there is room in the inner fabric. It can store items up to about 20 cm high. For example, dirty shoes and clothing. Spare clothes. Lunch box. It can be used in a variety of situations, such as sports, school, and work. strap fastening belt The length adjustment belt of the shoulder strap and the tip of the chest belt have a loop-shaped flat rubber at the end, so after adjusting the belt to the length that suits you, Wrap the belt around and turn the flat rubber over. This is a feature that has been used for a long time in baby carriers, so that the extended belt after adjusting the length will get caught in the fence and lose its balance and fall. I put the backpack in the front basket of the bicycle so that the belt does not get caught when taking it out. 15" PC pocket It seems that the most popular laptop sizes are 13 to 14 inches, but how many inches is your computer? I think that you will rely on the information that a bag for carrying a computer is "compatible with 〇〇 inches", but the size of the PC case is also important. When storing in a PC bag, it is recommended to use a PC case even if the bag contains shock cushioning material. A PC case is essential to protect against strong impacts. However, the size of the case varies, and the 14-inch PC in the case may not fit in a dedicated pocket. Therefore, this backpack was designed so that a 15-inch PC can fit about 25mm of space. In addition, the buckle tape that holds down the PC from the top of the backpack is partly due to the sewing strength of the tape, but we thought that it would be possible to store LCD tablets up to 15 inches in size, which are longer than PCs. Lower handle As an auxiliary handle used when putting in and out of the upper storage shelf on a train or airplane, or when moving a backpack on your back while carrying it forward. Rear carry-on and zipper pocket The back has a carry-on specification and a zippered pocket for a long wallet. Inside the zipper pocket, there is a solid pocket that can be sorted into pass cases and a 10mm D-ring, so you can use it with the included spring strap to store valuables such as keys and name holders. Functional pocket inside the body There is a mesh pocket with a zipper closure on the front of the main unit and a solid pocket that holds a three-size envelope in length. Front pocket interior, multifunctional pocket The inside of the front pocket is equipped with a pen stitch and a mesh pocket. *The accessories in the image are three long yellow envelopes, a Kindle, a glasses case, and four pens.