Originally Posted by Leo H.

Not as important a tip as wear a comfortable helmet and that fenders are very practical to add to a commuter bike, but I've had several times where my water bottle would wiggle out of its holder when I'm traveling at speed and hit a bump wrong.

I thought recently, and it seems to be working, that a couple/three rubber bands rolled down towards the bottom of the water bottle has kept my bottles more secure and that none have popped out or nearly popped out of their holder when I'm zipping down a bumpy road.