If you’re on the move in the great outdoors, you’ll need to drink more to keep yourself properly hydrated. The easiest way to do this is with a hydration system. You can supplement your Atrack backpack, for instance, with a professional hydration system consisting of a specially designed, 2-liter hydration bladder, a removable tube, a bite valve with protective cap and a thermal sleeve that keeps your water cool for hours.The drinking tube is inserted through the perfectly watertight sealing ring on your backpack.+ Hydration system with extra long drinking tube for all Atrack backpacks+ Hydration system designed by SOURCE VAGABOND System Ltd.+ Hydration system allows constant supply of liquid to your body without interuption of activity+ Large Widepac™ closure for easy filling, emtying, cleaning and drying of hydration reservoir+ 100% air tight and leak proof+ Taste-Free™ foil: Co-extruded PE-film by SOURCE, neutral in taste, no plastic flavour, BPA-free, phthalate-free+ Grunge Guard™ technology: inhibits bacteria growth inside the reservoir and drinking tube, FDA-approved and EPA-registered anti-microbialmaterials+ Glass-Like™ film is 2000% smoother than standard TPU films, with almost no difference from glass, preventing bacteria and bio-film build-up+ For filling the reservoir open the Widepac slider sideways and unfold the top+ For drinking bite lightly on the HELIX™ valve groove and sip+ For cleaning: rinse reservoir with warm soapy water, rinse well, dry open, store clean and dry+ Close safety cap during transport by turning the top+ Dirt Shield protective cap keeps drinking valve clean from dirt and dust+ Insulation pocket for maintining liquid‘s temperature+ Reservoir may be filled with warm liquids up to 60°C/140°FContents: Hydration system including drink tube, valve, protective cap, mounting element and insulation pocketDimensionsHeight: 29 cmWidth: 28 cmDepth: 8 cmTube Lenght:125 cmVolume: 2 LitreWeight 280g