Multiple Compartments: The hiking backpack is 16L.The main Pouch is 9.5x17.5 inches (WxH), it can hold iPad 3/4/5/6 and A4 magazine easily. The front pouch is 8x6.4 (LxW) inches, you can put your keys, cards, earphone, lipstick in it. The other front pouch with Velcro and zipper, which can fit all size phone, easy to access. The side mesh pack is 7.5 inches in height, it can hold 3 inches (diameter) bottle or umbrella.. Lightweight and Fordable: It weighs only 0.6 pounds, can easily fold into its own pocket for storage, and unfold when you need it.. Water-resistant and tear-resistant: This backpack is made of high-quality tear and water-resistant nylon fabric, easy to clean and anti-friction, effectively prevent it from tearing, wetting, and ripping.. Special Front pocket: two opening ways to front pocket with zipper and velcro, you can use zipper or velcro to open it. Any size mobile phone can fit, it is easy to access.. Comfortable and stable: Breathable mesh shoulder straps help relieve the stress from your shoulder. The side buckle work perfectly to distribute the packs weight and keep it steady and centered, good for sports, hiking, camping, and traveling