Source WLP 1.5L Hydration Reservoir - SO11429 The unique slim design leaves more space for your cargo. The cut-out centre prevents ballooning effect and retains the reservoir's shape even in extreme conditions. Low Profile Widepac (WLP) Main Features Low Profile Design The Low Profile WLP fits better into any backpack. The "Donut" (Backpacker.com 08-2013) keeps its shape at any filling level and drastically reduces sloshing of your fluids. Widepac closure (U.S Patent No. 7,648,276,B2) plus Large Filler Cap User-friendly Widepac slide closure allows extra wide opening, easy filling, cleaning, draining, and ice insertion. Airtight seal. Glass Like Film Technology A multi-layer Polyethylene film utilizing SOURCE's Glass-Like technology, which prevents bio-film build up making the system virtually self-cleaning. SOURCE's Glass-Like Film is 2000% smoother than standard TPU films, with virtually no difference from glass itself. Taste Free System Co-extruded PE film retains pure liquid taste with no plastic flavour. BPA and Phthalate free. Grunge-Guard Technology Inhibits bacteria growth on the reservoir and drinking tube surfaces for the life of the system. Technology utilized FDA-approved and EPA-registered anti-microbial agent. Easy Care & Low Maintenance Glass-Like technology combined with Grunge-Guard technology represent a new generation in hydration systems, in which cleaning is no longer an issue. Simply refill and drink again and again without special care. Water will remain fresh for days and even weeks. Handling and coupling WXP LP Hydration System features a Filler Handle, SQC SOURCE Quick Connect (QMT compatible) tube and Helix Source Bite Valve including the Dirt Shield Valve cover. Specs / Material Triple layer taste and odour free PE film with anti microbial agent Co-extruded tube PP, PE & POM injected plastic parts Silicon mouthpiece WLP Dimensions 1.5L/50oz 23.5cm x 41.5cm, 190g