We are all unique and have different mouth anatomies. For Willo to adapt to these differences, we provide 4 sizes of mouthpieces according to the size of your dental arch. To measure this size and know what would be the best fit for you, we have the Willo Fit Finder Kit.
When you place an order, you will receive a Fit Finder Kit, that helps you choose the perfect size from our mouthpiece line up, so you can have the best brushing experience with Willo. Once you try on your Fit Finder, let us know your size from your Willo account. Make sure to submit your size as soon as possible, so we can ship out your entire order as soon as possible.
Please note that your order will be automatically canceled if you don't update your size within 30 days from the order date.