We just bought a split top adjustable king bed and was skeptical that the sheets would stay in place. These fit perfectly and haven't slipped off once. They're lightweight, soft and comfortable.These sheets are soft and fairly wrinkle free, they do have deep pockets and the elastic on the corners, but still they come off of the corners. It’s a little aggravating but not enough to bother sending them back.I like them but they seem to come off to easy when I sleep. Only sheets i have had that has done it.Happy with the sheets even though there was a delay in shipping.These sheets fit my split head king Sleep Number bed. They are very soft and a little bit big so they have enough room for shrinkage after several washes. I have washed them once in warm water and did not notice any shrinkage. My only suggestion is that the top sheet could be longer on the sides. Originally I ordered a navy set and found they were shipped from China! After the 3 weeks, Amazon notified me that they were lost by the shipper and refunded my money. (Yay Amazon!) I went back online and found the ivory sheets that were delivered in 2 days.These sheets fit our sleep number bed perfectly! They are extremely soft and comfortable. I would buy again.Finally the best set of sheets for my split top bed- thank you! Excellent quality and durability!I ordered my mistake. I have a queen size adjustable bed . It is one piece bed. looking to see if you have that at Amazon