MOUNTAINTOP 40L Hiking Backpack for Outdoor Camping Networking 【EASE USE& INSTALL】 Save space

【EASE USE& INSTALL】 Save space and keep organized

Automatic timer (On 6 hours

【Compatibility & 12 Months Warranty】Suport iPhone 5 5s 6 6+ 6s 6s+ se 7 7+ 8 X

All the grasping

MOUNTAINTOP 40L Hiking Backpack for Outdoor Camping Networking 【EASE USE& INSTALL】 Save spaceMaterial: Polyester. YKK Zipper and YKK Buckle The main compartment is the size of the whole backpack. Mine is 20"h x 12"w x 4. 5" deep. Your Laptop(big enough for a 17"laptop). There is a compartment that can be used for a bladder and a holding place for the tube but no specific bladder space. The size is perfect and meets the personal carry on for airlines such as frontier so you can load these down and not pay for a checked bag. The belly strap is