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About product and suppliers:
        Alibaba.com offers 14,839 big backpack products. About 49% of these are backpacks, 3% are handbags, and 1% are messenger bags. 

A wide variety of big backpack options are available to you, such as softback, external frame, and internal frame. You can also choose from nylon, canvas, and genuine leather. As well as from 30 - 40l, 50 - 70l. And whether big backpack is free samples, or paid samples. 

There are 14,839 big backpack suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of big backpack respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 2,455 with Other, 1,985 with ISO9001, and 812 with BSCI certification.