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About product and suppliers:
        Alibaba.com offers 15,636 a d backpack products. About 40% of these are backpacks, 5% are school bags, and 3% are diaper bags. 

A wide variety of a d backpack options are available to you, such as internal frame, softback, and laptop backpack. You can also choose from pu, 600d. As well as from 30 - 40l, 50 - 70l. And whether a d backpack is free samples, or paid samples. 

There are 15,636 a d backpack suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of a d backpack respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 1,715 with Other, 1,530 with BSCI, and 1,374 with ISO9001 certification.