Just an FYI almost every LBS in the US worth anything sells the Podium Chill bottles, eliminates all the drawbacks of using a metal bottle. One thing I started doing was to take a couple of bottles the night before a ride on a hot day and fill them about 1/3 of the way with water, then lay them at a severe angle in the freezer, fill them before your ride with cold water and they will stay cold longer and stay cool a lot longer.