kuyou hydration pack with 2l hydration bladder water rucksack backpack bladder bag cycling bicycle bike/hiking climbing pouch (black) kuyou <b>backpack:</b> <br>- made of durable nylon: resistant to abrasion, wear and tear <br>- two layers design: one for the liquid container, and the other for keys, compass, phones, etc. <br>- wide webbed shoulder straps with holes for the water tube <br>-reflective article design for better safety <br><br><b>water bag:</b> <br>- made of safe, non-toxic, environmentally friendly material <br>- stores 2 liter water from 68°f to 104°f (20°c-40°c) <br>- water sipping tube that connects to the bottom of the water bladder <br>-it's simple to drink, pull the rubber mouth piece out and the water comes right out. push rubber mouth piece back to close, you don't have to bite anything!<br><br><b>feature:</b> <br>material: nylon & dacron(lining) <br>style: outdoor running, cycling, biking <br>capacity: 2l backpack + 2l water bladder <br>color: green/ blue /black /red /orange <br>applications:<br>cycling, hiking and other sporting activities. <br><br><b>package including:</b> <br>1*backpack <br>1*water bladder <br><br><b>warranty </b> <br>please do not hesitate to contact us if you are not satisfied for any reason. our products are backed by 18 months warranty.