a few bottle pics:
Narrow mouth nalgene:
Narrow mouth 40oz Klean Kanteen:
27oz Klean Kanteen (the tall skinny guys) :
40oz hydro flask:
GI canteen:
I didn't have a 64oz gatorade or a 2L soda bottle handy but a 60oz orange juice jug fit just fine so they should be good to go.