Went on easy, with the mattress still on top of the box spring, although I would recommend putting this on the boxspring without the weight of the mattress on top of it, if you can. That will allow you to tuck the bottom underneath the boxspring. The way I put it on worked fine too. I tucked it nicely and it gives it a clean, finished luck.￼ Great alternative to a traditional dust ruffle, for a neat and tidy look.