The original Platypus water reservoir that became a backcountry classic, the Platypus Hoser Hands-Free Hydration System Reservoir is an ultralight, minimalist hydration system that delivers taste-free hydration with a versatile, durable design that makes it great for backpacking, thru-hiking, and day hikes. Offered with or without the Fast Flow Valve, the self-sealing HyFLO bite valve delivers a 30-percent increase in flow rate, making it quicker and easier to hydrate on the go. An integrated hang/carry loop makes it easy to secure the reservoir in a backpack or elsewhere. The Hoser is taste-free, BPA-free, BPS-free, phthalate-free and features embedded silver-ion to keep the reservoir funk-free. The outlet on this versatile reservoir also accepts any threaded Platypus drink tube or closure cap. The Platypus Hoser Reservoir is available in 4 sizes: the 1.0-Liter measures 5.25 x 11.5 inches and weighs 3.2 ounces, the 1.8-Liter measures 7.75 x 11.5 inches and weighs 3.4 ounces, the 2.0-Liter measures 6 x 16 inches and weighs 3.6 ounces, and the 3.0-Liter measures 7 x 16.5 inches and weighs 3.8 ounces. Manufacturer?s limited lifetime warranty. Made in the USA.