Dimension: 8.6"(W) x 7.1"(H) x 3.9"(D)/ 22 x 18 x 10cm, Shoulder Strap Length: 80-150cm Structure: One front cover zipper patch pocket, one front velcro patch pocket, one front zipper pocket, one main compartment with inner mesh pocket. Material: Made of Water-resistant 900D Oxford fabric, scratch-resistant, not easy to fade, provide strong waterproof performance and anti-scratch wear resistance. Molle system: With Molle straps on the side/back, can load some molle bag, water bottle pouch, and other samll bag. aslo can load on the large package, make your backpack more personalized and practical. Function: Perfect for hiking, camping, travelling, trekking, hunting, shopping, running, cycling, climbing, sports and so on.