HYDRATION BACKPACK WITH LARGE POCKETS ]Back Pockets On Sides Help You To Stash Your Essentials Such As Keys, Thin Raincoats,Smartphone, Ipad,Wallet, Towels and other outdoor product.[LIGHTWEIGHT OUTDOOR BACKPACK]Lightweight Design with Breathable Material in Well Made Condition,you will feel more comfortable to get this backpack for your outdoor sport activity.[BREATHABLE CAMPING BACKPACK]:Made of ultralight tear resistant high-quality nylon fabric, that's very lightweigh comfortable and durable.Back with breathable net design, shock absorption, moisture absorption, good ventilation, to ensure that the back dry.[DURABLE AND ECO-ENVIRONMENTLY WATER BLADDER]:This 3L Hydration bladder made from high quality TPC food-grade materials(much better than EVA), wear-resistant, corrosion-resistant and no peculiar smell. Large opening for easy cleaning, you can add ice cubes for an even cooler drink. It is an ideal water replenishment equipment for you to keep moisture when living outdoors.[PERFECT FOR ANY OUTDOOR SPORTS OCCASSION]:Hydration rucksack bladder suitable for camping,climbing,riding, skiing,hiking, jogging, night running, mountaineering, snowboarding,adventure, marathon and other outdoor sports.Portable Hydration Water Pack are unisex, suitable for Men and Women,and also gifts for Christmas, Thanksgiving, Father's Day, Mother's Day, birthday gifts and other holidaysProper Size: Hydration Bladder Capacity: 2.5L, Size: 43 X 18 cm, net weight:500gHigh Quality: Rugged 600D Oxford fabric and nylon lining,resistant to tear and abrasionPortable: Slender and portable design with middle handle strap and adjustable webbing chest and shoulder strapsHands-free hydration hose with bite valve, gently biting the valve to open up the flow of water.Great partner of running, hiking, Riding and other Outdoor sportConvenient: With a pouch on the back, easy to carry your phone, keys and some small tools Adjustable and comfortable shoulder strap and hander belt with hook