Yes and no. If you're seeing the letters "ex" on the back of a Vommat next to a date in the not too distant past, don't fret. The "ex" here does not stand for expiration but for "extra" which is necessary for us to call out in manufacturing. The date after the "ex" is the date of manufacture. So Vommats do expire, but not until 4 years after the date of manufacture which you can see on the back of your mats.