Not a good fit 4 adjustable beds. We have a Sleep Number adjustable king bed. These elastic bed skirts are a must. I just can’t keep this one from coming loose and sagging. I used the small pin screws that came with, but still have a problem w it coming loose. Overall it’s fairly thin, so keep that in mind when ordering. This is the best I’ve found, so far, and I’m glad at least I’ve got a bed skirt 2 cover bottom of my mattress.