Me, too, Southern Belle. That way it'll stay cool in the hot weather. I thnk the Polar bottles are great.

I've also just put some liquid dishwasher soap in the Polar bottle and swished it around. Gets rid of the mold. My problem is the lipstick stains. My lipstick has high spf and feels good to me. I can even apply it while on the bike pretty successfully. Any suggestions to get that off? The dishwasher doesn't help much. I try to wipe it off as much as possible before putting the lids into the dishwasher.