|Camelbak's hydration bladder|
When you are riding around the city, there's hardly time to pull over and sip a drink from your canteen.
This is where hydration packs with an internal bladder would come in handy.
I've been fascinated with Camelbak's range of Military-grade hydration bladders and found that they are small enough to be carried without obstructing your range of movement.
These packs are not cheap and most of the packs that are sold off the shelves are quite overpriced.
I saw a Camelbak MULE in safety orange which I am rather interested in for my future rides.
Another contender is Wingnut packs. They make some real kickass packs and are very rare around this region.