What's in the box:

5L Hydration Pack Backpack with 2L Water Bladder Ultralight Breathable Hydration Vest For Outdoors Running Cycling Climbing (Black)

This is a 5L professional cycling backpack with 2L water bladder,capable for storing most necessaries for outdoor activities, suitablefor riding, running and mountaineering etc.

Features:
WATER SUPPLEMENT--Environmental TPU hydration bladder equipped, pressure-tolerant and leakproof. Drinking the water by the tube directlywithout taking your running vest off or stopping your steps.
LIGHTWEIGHT--Ultralight backpack with adjustable mesh shoulder straps and two sternum straps distribute weight effectively, reducesstrength consumption. 2L water bladder provides you the max support,min burden and more convenience.
LARGE CAPACITY--Spacious compartments with 5L loading capacity is large enough for storing most daily needs such as clothes,purse,books,cellphone, water-bottle and umbrella etc.
BREATHABLE--Excellent air ventilation system consist of mesh back and mesh shoulder straps prevents stuffiness and releasespressure to your back.
SAFETY--Designed with reflective strips on the back and the front that is conspicuous in the dark straps to keep you safe.
VERSATILE--Suitable for all kinds of outdoor activities include riding, running, cycling,camping,hiking, mountaineering, outing,orexcursions etc.

Specification:
Color:Blue 1/Blue 2/Red/Pink/Black/Green (optional)
Set:Backpack/Backpack with water bladder (optional)
Material:Polyester,TPU
Backpack capacity: 5L
Water Bladder capacity: 2L
Package size: 26*45*8cm/10.2*17.7*3.1in
Package weight: 500g/17.6oz

Package List:
1* Backpack
1* Water Bladder