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What are the dimensions of the backpack

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Size: 420 * 330 * 50mm
which of these three numbers is the height of the backpack? This is a backpack

the size of a backpack is often expressed in terms of capacity. The capacity of common backpacks is 30L, 40L, 50L and 60L. About 40L is enough for daily use. If you use it for long-distance travel, you’d better choose a backpack with more than 60L

airlines have size requirements for carry on backpacks. They must meet the boarding size before they can take them on the plane. However, now the implementation standards of various airlines are different, but if the backpack exceeds the foot standard, it needs to be checked in

generally speaking, the length, width and height of the backpack shall not exceed 55cm (21 inches), 40cm (15 inches) and 20cm (7 inches) respectively, and the capacity shall not exceed 44l, which is basically within the allowable range of boarding

selection method of backpack:

1 You need to consider the purpose of the backpack

the student party may be more concerned about the capacity of the backpack, office workers pay more attention to business attributes, sports fans are more interested in the internal space planning of the backpack, and for women, the appearance is the top priority. In addition, there are many backpacks with both daily commuting and sports, which also deserve attention. Therefore, when choosing a backpack, the first step is to think clearly about the purpose of buying a backpack

2.& nbsp; You need to choose your favorite style

there are many styles of backpacks. Shoulder bags and single shoulder bags are optional attributes. Here you can choose the style of backpacks according to your preferences. You can choose double shoulder bags in pursuit of practicality and single shoulder bags in pursuit of fashion

3.& nbsp; You need to choose your favorite color

after the purpose and style are determined, the appearance of a backpack is also important. There are all kinds of color matching, such as colorful, low-key and calm, which can be selected according to your preferences

the size of the backpack refers to the length, width and height, in millimeters (mm). The length refers to the width when the package body is erected (the length of the front side can be measured), the height refers to the height when the package body is erected, and the width refers to the thickness when the package body is erected

the external support backpack has a very firm external support, which plays a good supporting role. The backpack and the carrying system are fixed on the frame of the backpack. The advantages are: it is more comfortable to walk on a flat road, and the backpack capacity is large. The disadvantage is that it is more bulky than the inner support backpack with the same volume and has low safety in poor road conditions

inner support backpack move the support to the inside of the backpack to integrate the support and the backpack. Some small or lightweight backpacks have only back pads and no brackets. The advantage is to make the backpack more comfortable and close to the body, making the center of gravity more stable. It is more flexible than the backpack with external support, especially when crossing narrow places, which can reflect its advantages. The disadvantages are: most inner support backpacks have only 1 to 2 separation layers, less side bags, and it is troublesome to classify and place items

the size of the backpack refers to the length, width and height, in millimeters (mm)

length refers to the width when the package body is erected (the length of the front side can be measured), height refers to the height when the package body is erected, and width refers to the thickness when the package body is erected

comparison of places selling bags on Taobao.

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