Material: 1000D high-strength military-style nylon, waterproof silk cotton lining, durable and waterproof, not easy to fade.Dimensions: 11.8"(W) x 18.5"(H) x 8 .6"(D) / 30 x 47 x 22 cm. Weight: 1.3 kg. Molle System: The Molle external expansion system is designed to be used with other equipment. You can load pouches, water bottle bags, accessory bags, etc. Structure: The capacity is 45L, which can hold 15" laptops, A4 magazines, 15 T-shirts, etc. It is suitable for a 3 day trip. Function: suitable for hiking, camping, backpacking, hunting, travel, gym, sports, school, tool kit, outdoors, etc.Product DescriptionMeasurements :1. Total: 11.8"(W) x 18.5"(H) x 8.6"(D) / 30 x 47 x 22 cm.2. Zippered front top pocket: 8.3"(W) x 5.1" (H) x 1.2" (D) / 21 x 13 x 3 cm3. The lower front zippered pocket: 8.3" (W) x 9.8" (H) x 1.2" (D) / 21 x 25 x 3 cm4. Main package (front): 10.6 " (W) x 17.3" (H) x 2.7" (D) / 27 x 44 x 7 cm5. Main bag: 11.8" (W) x 18.5" (H) x 5.1" (D) / 30 x 47 x 13 cm6. Shoulder strap length: 27.5"-35.4" / 70-90cm Function: 1. Adjustable long shoulder strap, suitable for almost all people, such as children, obese people, thin people, etc. 2. Adjustable long waist: military nylon fabric 3. The sliding adjustment system of the chest can quickly adjust to a comfortable state, making the backpack more comfortable.4.The external MOLLE expansion system is designed to be used with other equipment.You can load pouches, bottle bags water bottle, accessory bags, etc.5.The back belt can be hooked on the luggage cart to fix the bag on the suitcase.Note: Hand wash in cold water.Tolerance: 1-3cmPacking List : 1 x tactical package.