Nice aero bottle option that isn't completely overpriced, but the design has some major usability flaws. The first is that the cap to drink doesn't fully close, so it will spill when riding over rougher bumps or if you ever flip the bottle. The cap itself is also a pain to put on and take off, so refilling is annoying. Overall, the bottle/cage is something I'd only ever use during a race wherea couple of watts is important, but won't be on my bike on a normal basis.
