Between my conditioners and shampoos, I really needed a shelf or two in the shower. Well these are perfect. Very simple to put up and I left them for 24 hours before putting anything on them to make sure the adhesive tape would hold. It even comes with extra adhesive should you need it. I can tell you that the shelves now are holding large bottles of everything that is used around here so really got put to the test...and they passed! They are holding everything perfectly.