The cloth materials used in military backpacks have many characteristics, but some of them are not suitable for modern people. After all, you don't actually have to carry a backpack on the battlefield, so you don't need infrared detection, bulletproof, and fireproof features. These unused features are worth adding to the weight of the package. (2) When military backpacks are used in life, their wear resistance and water resistance are very strong and practical, but it should be noted that the more wear-resistant the fabric, the better the water resistance, because generally, the heavier wear resistance. Strong and waterproof, will cause the backpack to become empty.
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