This 28-liter backpack uses rucksack functionality in a three-compartment bag with plenty of storage for a variety of endeavors because the best packs are multipurpose. Ergonomic, mesh-lined shoulder straps allow all-day wear, wherever you take this pack, or it takes you.100% Polyester. 18.5 x 12.5 x 7in (47 x 32 x 18cm). 1600in³ (26L). Large main compartment with magazine sleeve. Front compartment with internal mesh pockets. Water bottle pockets. Skate straps.