I needed a split mattress king size sheet set. The microfiber set only came in gray but I did buy a set. I also bought a beautiful bright blue set of this and was not as pleased with the comfort of the fabric. So I put the gray microfiber sheets on the bed and pillows we use and topped it with the flat sheet over the gray top sheet for color. I put the blue pillowcases on an extra set of pillows for when I make the bed. Comfort from the microfiber sheets and color from these.The problem is our Sleep Number bed came as two separate beds. These don’t work on ours. The one I was told was being shipped has the split mattress. The sheets are nice quality. I recommend the seller because of the quality and they arrived in a timely manner.They are super soft and fit the bed. We have a Cal King and these were perfect. The first night after washing, they were a bit stiff but softened up right away. I will be getting another set.These are the best split top king sheets I have bought! Fit perfectly and super comfortable. Will definitely buy more!Ove these great value for priceNice fit after figuring how to put on.I love the feel of these sheets, but they're way too big for my king split top mattress. They're at least 3 inches too wide and too long.The quality of the material is good. I am just finding it challenging to keep the sheets on the bed. No straps so with the movement of the adjustable bed the sheets tend to ride up.The one star is being generous though the pillow cover do fit. Shipped wrong size , double rather than three quarter.. The fitted sheet is stitched back on itself so that even if it was the right size it would still not go on the bed. It almost looks like they sewed together a few scraps and called it a sheet. Will never buy from this supplier again