Many people are in love with backpacks. Wearing a fashionable backpack, no matter what clothes you wear or what style you wear, you can hold it. It is a very pleasant thing to carry a backpack you like and shuttle through the streets and alleys of major tourist attractions. However, there are more and more styles of backpacks, and even more sizes and specifications. It is not easy to choose a suitable backpack. Next, Laptop Backpack Manufacturers will talk about the size of the backpack, tell you what size to choose when buying a backpack, and how big a 30-liter backpack is.

　　When it comes to the size of the backpack, some people will ask, what is the standard size of the backpack? In fact, there is no standard size for the backpack, but there are different sizes. It is worth noting that the size of the backpack is often expressed in terms of capacity, which is usually calculated from the width and length of the bottom of the backpack and the height of the backpack. The common size and capacity of backpacks often have 30 liters, 40 liters, 50 liters, and 60 liters, and 40L is enough for daily use. If it is used for long-distance travel, it is best to choose a larger capacity, such as a 60-70 meter outdoor backpack.

　　Knowing the calculation method of backpack capacity, it is very simple to know how big a 30-liter backpack is. Generally speaking, the length, width, and height of a 30-liter backpack are 30 cm, 25 cm, and 45 cm, respectively. Trivial items and a small change of laundry.