432 18 liter backpack products are offered for sale by suppliers on Alibaba.com, of which student backpack accounts for 50%, tactical backpacks accounts for 5%, and waterproof bags & pouch accounts for 4%.
A wide variety of 18 liter backpack options are available to you, such as tactical, outdoor and fashion.You can also choose from waterproof, sport and anti-theft 18 liter backpack,as well as from polyester, oxford, and nylon 18 liter backpack, and whether 18 liter backpack is bags, interior compartment, or interior slot pocket.