Check out this peice of gear that some of the Scouts own and use when they go backpacking. Read below to see what they have to say about it!
I am obsessed with this water bottle. Hands down. The mouthpiece only works if you use your teeth to suction it, there's no on/off mode, it is super drip and leak proof, and when it's dry, it folds up so light and take up zero space. I have one of these and a Camelback version of this type of small water bladder in my zpack and it's perfect.
I love it more than an ordinary water bottle that is large, clunky, and takes up a lot of space, and I love it more than a camelback bladder because it's smaller and easier to re-fill and way better for winter camping— since those bladder tubes often freeze overnight.