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 protect the reservoir from mold and bacteria. 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.