1.[THE SPACE YOU NEED]this hiking backpack has room for all of your essential gear. This Tactical backpack size appro: 18inch x 13.2inch x 11.6inch dimensions and appropriately sized 45L capacity, Large multi-layer interior storage compartments can accommodate a lot of outdoor equipment, and also meet your daily travel needs. Suitable for fitness, outdoor travel, hiking and other outdoor activities 2.[MULTIPLE COMPARTMENTS]designed with 5 compartments for storing different stuff. two front pockets for small items, two large compartments with built-in zippered pocket and mesh pocket for big and important supplies, dedicated laptop/device compartment (17''), a hidden back pocket for frequently-used items, army military backpack opens flat to 180 degrees for easy packing/unpacking 3.[MOLLE MODULAR DESIGN]tactical molle backpack has molle system throughout. Molle webbing of this military molle backpack rucksack works perfectly for attaching additional Molle tactical pouches, the front & both sides & bottom & shoulder straps come with molle attachment straps, the shoulder straps with two D-rings to hang somethings, and the straps at the bottom can be used to hold a tent or sleeping pad or other outdoor gear 4.[DURABLE & WATERPROOF]Military grade backpack is made from 900D polyester material, tactical assault backpack is reinforced and double stitched at all stress points. Resistant and tough and our Special coating makes our training backpack both water resistant and scratch proof