I was looking for something that could hold together our Cal King complete split. So I went to Costco (you can go anywhere) got a piece of memory foam and laid it on top of both sides together. Then I bought these sheets and cut the memory foam down as far as the top split would be, brilliant I must say!! Now we dont regret buying the Cal King Adjustable bed! We were really strugglung with the gap in the middle, it stayed together it just made it hard to lay by eachother close. Problem solved!!