I needed a small bottle to fit under a frame bag on longer rides. I have a small 50 cm frame and with the under mount bag I cold not fit a regular size water bottle. this works perfectly.
It is light and soft, easy to squeeze. The cap is good enough to keep dirt out. It holds a lot for something relatively short.
Handy to have a smaller water bottle for a quick trail ride. Also works great on kids MTB frames that have water bottle mounts but no practical room for a full size water bottle to fit. The dustcap is nice for dry weather trail rides and i end up moving that around to other bottles...
