All children come in different sizes so we have a basic guideline below. If you're not sure please email us description of your child and we will do our best to help you out with a recommendation.
Small
Medium
Large
If you find that your child is between two sizes, we recommend you select the larger size, to guarantee better air flow inside the tube to prevent a seal that could be caused by suction and it will allow improved ventilation inside the tube which will reduce condensation and moisture that could cause skin irritation.
It's time to help your child give up the thumb sucking habit with Thumbs Out!
*Yes, adults. Don't be embarrassed, it's more common than you think. If you have had this issue for longer than you can remember and want to do something about it order a large Thumbs Out today. If you would like us to send your product a little more discretely than normal please let us know in the comments box during the checkout process. We can send it to you in a plain envelope. No one needs to know.