Blender Bottles

Ordering supplies and such, would like to get some blender bottles... typical size is 28oz but I noticed that they do offer a smaller size which claims to be 20 oz but reviews are saying it's really 12 oz.   What size do most of you tend to use.. both at home and when traveling.. Thanks

I have 3 - 20 oz for protein coffees and the large 2 - 28 oz sized ones for water. My husband uses one of the 20 oz ones for his protein coffee ever morning.

--gina

I like the smaller 20oz ones for my protein shakes.

Great.. wasn't sure if you had to have the larger one to get the little metal ball to have room to do it's blending thing.  Not a bad idea Gina to have one for water as well.  Off to shopping I go..

Mine are 20 oz with enough room at the top for another couple of oz. I've never seen 12 oz blender bottles. Maybe the reviewers are confused or got a knockoff instead of the real thing?