They bed frames arrived super fast!  The split kings were easy to put together.  They are a bit heavy but I was able to get the job done and the frames in the bed frames by myself.  I am 79 years old but got it done as social distancing didn’t allow for anyone to help.  The mattresses just arrived and are installed.  Have yet to sleep on them but all of the functions are working as described.  Anxious to give them a try for real.