We have owned a split king adjustable bed for years. The bed has been great. Sheets…not so much. We always buy beds advertised for adjustable beds. Some come off every few hours. Others almost make it a full day. One company had good ones but no longer sell them. We’ve purchased from a number of companies and FINALLY have found one that sells a lovely comfortable sheet that also stays on!!! We are senior citizens. I, in particular, am in bed more than the average person because of a surgery which required months of healing and other health issues. Nothing is more annoying than your corners popping off. FINALLY we have found a company we can depend on. After the first set worked so well I ordered the crisp and cool just to give each a try. Both are wonderful. They wash beautifully and I actually believe they are made from long staple cotton so hopefully they won’t split at that mid area that so many adjustable sheets do too quickly. These are very well priced. Trust me we’ve paid much more for sheets that don’t work. THANK YOU. We are so thankful! I would give you 20 stars if I could!!!!