Mtb Backpack with 2L Hydration Bladder Great way to stay hydrated at all times and efficient for all types of athletic and family events It's thin, flat, and lightweight making it easy to carry. When a pack that holds only water is too small and a pack that holds everything is too big, the compact bike backpack is just right. This Arvano 6l backpack are not only used for bicycle tours, also can be used for your day-hiking, trail running, road biking, snowboarding, skiing, you need a hydration pack that you can rely on. Capacity: 6L. Hydration Capacity: 2L (70-ounce). 2 dual-way zippers main compartments to keep your gear organized Hydration system, Included Arvano 2L hydration reservoir keeps you hydrated longer Two tube clips for fixing drink tube Padded shoulder straps and back panel for extra comfort Height-adjustable chest strap A top handle for easy grabbing Front zipped pocket with earphone cable outlet for mobile phone.Second pocket with two-way zip for a spare tubes, wallet and flat repair tools .The hydration compartment with two-way zipper. Comfortable carry Breathable mesh back panel for maximum comfort and ventilation.Adjustable shoulder, chest and waist straps to ensure a stable and suitable carry for perfect fit, so the pack will not bounce while cycling. It adds no heavy burden to your travel load. it’s a perfect riding backpack or running backpack. Easy hydration system Dedicated hydration compartment with included BPA-free 2L hydration bladder. and it have two Velcro straps to hold the bladder in place. A outlet for hydration tube.There are two rotating clips on the shoulder straps that allow you to secure the pipe across your chest for left or right sided drinker. This makes it easy to drink while cycling/running. 2-liter water bladder for good hydration during rides Drink Tube: 100cm. Both the bladder and Tube are made of durable TPU food-grade material, 100% BPA free. Premium taste-free, leak-proof reservoir with fast flow rate offers hydration on the go for hikers, backpackers, travelers and mountain bikers. It's lightweight, it has a large 10cm opening for ice that also makes cleaning easy. Ergonomic handle allows for easy 1-handed filling. Press the button to quickly disconnect hose, and the disconnect valve stays shut when the hose is disconnected, so you can take the bag out of the pack, leaving the hose in the pack, fill it, and then re-connect. leak-proof On/Off valve. Pull out the bite valve to open, lightly bite the mouthpiece and suck the water like a straw it will open up and let water through. Push it back to close when you’re done drinking.Bite valve can be rotated 360 degrees.Your mouthpiece will stay grit-free with the included dust cover. Hydration Bladder Included Before first use, rinse the water bag a few times, then fill it with water, add a drop of bleach to it and leave it for 24 hours.The optimum temperature for drinking water should be between -20°C and 50°C.Make sure the bladder is completely dry before storing it.If the drinking tube is kinked and stops the water flow. This is easily fixed by submerging the tube in boiling water for 15 seconds.Before you putting the water bladder into your backpack, double check its seal by squeeze it. The O ring and cap gasket are the keys to keep the bladder sealed.