Greg, Thanks for the info, Walmart's travel pillow would probably be good for the smallest size. A customer ordered their pillow on Houzz 18 X 18 size. Since I ordered the pillow from here myself I and assumed as they did the pillow came with stuffing (I wrote the description on Houzz). I just ordered them another pillow and told them to keep their pillow case so they will have a pair. Hopefully they will see me as a good vendor, the word of mouth advertising will help me.
Melany, glad to hear your pillows fit the pillow covers and solved your storage problem.
Kathleen, I hope Sean sees your description and he will consider adding it to the pillow order information.
I'm going to close this discussion because I think everyone has confirmed and contributed good ideas that can be included in the pillow description. I appreciate your help very much.