Originally Posted by Chuckles1

I can remove the water bottle and drink while riding with one hand on the top bar of drop handlebars, but what I can't do is open the valve with one hand. So I generally stop to drink. Do you all leave the valve open during your rides? I don't do that because I always thought water could splash out, dust and grime could get in, and I'd get a bit of grit in with my water. Maybe I should try leaving valve open if it's not problematic...