Will this fit into a cup holder? April 22, 2019 19:10 Yes, the astrea bottle should fit in most standard car cup holders. The diameter of our bottle is just under 3 inches. Related articles Do I need to do anything to it before it's ready to drink out of? What are the dimensions of the bottle? Is this bottle leak-proof? Does this bottle keep water cold? I’m only getting air when I try to drink through the bottle. Why? Comments 0 comments Article is closed for comments.