AONIJIE 5L Outdoor Sport Multifunctional Camping Backpack Cycling Running Climbing Hiking Hydration Vest PackLIGNTWEIGHT FOR HIKING: Our hydration backpack weights 0. 51 pounds and is super light, reducing much of the load during the trip. When it comes to hiking, the shorter you plan to spend on the trail, the lighter pack you'll need. 5L LARGE CAPACITY: Large capacity design which allows you to fill your helmet in easily. The maximum loading weight is 22. 05 pounds, two side pockets for even more space. MULTIPLE STORAGE COMPARTMENT: Designed with 9exterior