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About product and suppliers:
        Alibaba.com offers 16,338 back pack with usb products. About 61% of these are backpacks, 1% are data cables, and 1% are mobile phone cables. 

A wide variety of back pack with usb options are available to you, such as softback, external frame, and internal frame. You can also choose from day backpack, camping & hiking. As well as from 30 - 40l, 50 - 70l. And whether back pack with usb is nylon, 600d, or canvas. 

There are 16,519 back pack with usb suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 98%, 1%, and 1% of back pack with usb respectively. 

Back pack with usb products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 2,152 with ISO9001, 2,045 with Other, and 813 with BSCI certification.