Choose the most important accessories for your backpack
The accessories of the backpack are of course important, and the knowledge of two kinds of accessories is best understood when choosing a computer backpack. These are the main two kinds, the first one is the handle. The second is the zipper pull head. Next, let's understand together. 1.
The handle is one of the places where the computer backpack is tested by gravity, which is often the most deadly detail.
There are two kinds of handles for selecting computer backpacks, one is aluminum handles and the other is nylon handles.
The aluminum joint handle depends on whether the aluminum joint does not fade, and knocks on the surface with your hand to see if there is any empty sound. If so, it indicates that the aluminum joint does not wear the webbing and is not enough to reinforce.
Then look at the grip. If the handle is full, it can conform to the human body handle system;
The third is to pull, pull one to three times, test whether the webbing in the handle is tight with the top of the seam, in order to use for a long time. Let's look at the nylon handle again.
Nylon handles are used in traditional computer backpacks. Nylon with higher density is strong and durable, and its quality is guaranteed. In addition to its own quality, nylon handles should be made of large handles, it is not easy to get injured when extracting;
Let's look at the tightness of the nylon handle and the top of the bag. It is more important to check whether there is a secondary reinforcement treatment for the seam. 2.
Zipper pull head the zipper of the backpack is generally used for business models to show rigor and fashion, so the backpack basically uses the No. 5 zipper, which is exquisite and tight, when choosing a zipper, you should pull it directly. It is feasible if you pull it back and forth.
Another is the waterproof property of the zipper, which is commonly used as a waterproof nylon zipper, because nylon itself does not absorb water, and the main test method developed with nylon material is the degree of pressing it looks like.
If you choose a plastic slider for the backpack, check its firmness;
If you choose a metal slider, check his metal density; And the silicone pull head is about to check his toughness.
The pull head is actually one of the design features of the backpack. His design is to use the double pull head design to open and close the backpack opening from both sides, which is convenient to use, therefore, the long-term damage of the pull head is reduced and the service life of the zipper is lengthened.