You're not going to put just any old bottle on your nice new bike; drop the Castelli Water Bottle into the cage before you head out, and hydrate in style.
This is a very basic water bottle and it works fine for that. The bottle is soft and easy to squeeze when I want a gush of water rather than a trickle. A litle on the small side so don't plan on this alone if you're going out for a long ride. In any case, I'm a sucker for the Castelli logo so I couldn't resist.