General: The Source WLPS is a low-profile hydration package with a total of 3L liquid capacity, which was specially developed for the integration into ballistic vests. Thanks to the built-in glass liner technology with Grunge Guard, bacteria have no chance. This unique antimicrobial system reliably inhibits bacterial growth from the outset. source uses a multi-layered polyethylene film that is 2000% smoother than standard TPU films and consequently prevents a biofilm build-up. Thus is the system self-cleaning. Even after months in use can always be easily refilled water without a need for cleaning. Taste-free technology provides odorless water without any plastic taste. Details: low-profile Technology Hi-FlowStorm-Valve No-Bite Push-Pull Valve with Integrated Shut-off System Angled valve can be rotated 360 degrees for perfect valve / mouth alignment Dirt-Shield protective cover keeps the drinking valve free from dirt QMT QuickConnector allows the connection of filters Cool Cover Tube insulated and blocked UV light (water remains cool and free of bacteria) Widepac Wide Opening Access Patented slide closure for easy filling, emptying and cleaning. Airtight seal! (U.S. Patent No. 7,648,276, B2) Specifications Liquid capacity: 3L / 100 oz Weight (reservoir + drinking pipe): 0.209 kg (0.127 kg + 0.082 kg) / 0.46 Pound Reservoir: 435 µm coextruded glass-like PE Valve: Angled Storm Valve Tube: weave covered 94 cm / 37 inch long Size: Length: 15 inch/ 38 cm - Max. Width: 9.8 inch/ 25 cm Max. Depth: 2.6 inch/6.7 cm The black color refers to the tube, not to the drinking bubble!