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About product and suppliers:
        Alibaba.com offers 213 511 backpack products. About 40% of these are backpacks, 2% are laptop bags, and 1% are handbags. 

A wide variety of 511 backpack options are available to you, such as softback, external frame, and internal frame. You can also choose from paid samples, free samples. 

There are 133 511 backpack suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Pakistan, which supply 97%, 1%, and 1% of 511 backpack respectively. 

11 backpack products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 44 with ISO9001, 9 with Other, and 8 with BSCI certification.