AONIJIE 5L Outdoor Sport Multifunctional Camping Backpack Cycling Running Climbing Hiking Hydration Vest Pack with 500ml Soft Flask (Black, One Size)

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. LIGNTWEIGHT 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. STRONG FRAME AND DURABLE MATERIAL: Made of ultralight elastic nylon cloth, polyester, breathable mesh back and shoulder strap, the product devotes itself to an effective helper, not only comfortable but durable. MULTIPLE STORAGE COMPARTMENT: Designed with 9exterior pockets, you can store all tiny items such as vacuum cup, keys, phone and cash etc. These pockets also allow you to get the things directly, extremely convenien FIT YOU WELL: Ergonomic designed vest-shaped bag coming with adjustable waist strap and high elastic chest strap,two sizes for your option.This backpack can be used for more than just hiking.It is suitable for almost all outdoors activities such as running, riding, camping, marathon, etc.