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 What are the dimensions of the bottle? Do I need to do anything to it before it's ready to drink out of? Will this bottle sweat? Does this bottle keep water cold? Is this bottle leak-proof? Comments 0 comments Article is closed for comments.