HydraPak Water Reservoir Bladd

This is a very well-designed hydration bladder. It is strong, flexible, and is able to be turned inside out, which makes it easy to clean and dry. It has a good internal support system, so that water doesn't slosh around or slump in your pack. The bite valve is replaceable, when I chew on it too much. I like the slide-top opening, which makes much easier to fill and empty, compared to the side-rotating-disk fill method.

Fantastic, no leaks & the shut off mouth piece is awesome. 3L is great for the warm weather making sure I have plenty of water. Only thing is slight odor and taste with use ... hoping it will fade. But worth the cost