Our hydration backpack has 4 zipper pockets and 5 compartment inside the backpack allows you to easily separate and organize items.You can store water bladder,laptop (fits 13.3”laptop) or clothes on the main pockets.You can use the other compartments for nutrition bars,gum,bandanas,wallet,keys and phone etc.The water backpack is equipped with a 3L large capacity hydration bladder.3L of large capacity ensures enough water supply and is easy to use.The hydration bladder is safe and leak-proof,and it is easy to replace.Two hidden water hose outlet on the top is very convenient for your supply needs.Hydtation pack back mesh padding is equipped with honeycomb foam to accelerate air flow and keep your back cool.Adjustable padded shoulder straps, waist strap and chest strap effectively distribute the load, ensuring comfort even during extended wear, making it suitable for hiking, cycling, and other activities.The hydration pack backpack equipped with 4 rows of MOLLE webbing and loop straps.You can easily attach tactical bags,personalized patches,climbing gear or facilitate your portable access to items during hunting,such as sunglasses,knife,flashlight,gloves etc.Ideal for outdoor activities.This flexible system lets you expand your setup to meet your specific needs.Water hydration backpack is made of high quality 500D Nylon,with high durability and water-resistant to meet the needs of outdoor adventures.YKK zipper with rope,which is heavy-duty smooth,sturdy materials and anti-theft.The size of tactical hydration backpack :18.5x9.5x3.5inch.it's perfect for outdoor adventures,Mountain biking, trail running and military enthusiasts.