I usually do not write reviews, but this product is so excellent that I would like to write a review. This is one of the best products I could ever buy for this purpose! This will save having to change the bed. From experience, I have seen when an accident happened in the bed was completely dry underneath. The only thing I would change is selling to of the largest bed protectors in a set. If one bed protector is underneath and the other one is on top they will be no need to change any sheets at all, just the clothing on the individual who had the accident. This is an awesome, awesome product! I will be careful to buy the very largest bed, protector, even for a twin bed, so that the protector does not move or shift during sleep, causing the sheets underneath to get wet. I would use a bed protector underneath, and on top of the individual as well to keep everything on the bed completely dry. Game changer! Definitely buy this product!