I was very disappointed with this product. The website claims that the "waterproof adhesive lasts all day" but I used the product while on vacation. I followed the application process directly from the website and the sticker did not last me more than 5 minutes in the water before falling off. Another day, when I did not go in the water, the product fell off based off of sweat. Was not impressed at all. Also because I was on vacation I was unable to return it within the 14 day period.