Hands free hydration, the Platypus Big Zip Hydration Reservoir is perfect for cycling, kayaking, hiking and travel. Premium taste free material ensures every sip is exactly as youd expect. SlideLock leak free closure shuts tight but opens wide for easy cleaning. Convenient carry handle, hang it in a tree or from a nail in the cabin. BPA free, supple and super durable with SlimeGuard anti microbial treatment. Ergonomic, right angle shut off valve for leak free packing. Quick disconnect hose for easy filling, cleaning and swapping of packs. Made in the USA.