We bought an adjustable King size bed for my health needs, so needed split King sheets, the store wanted $300 for a set of cheap 300 count sheets. I turned to trusty Amazon for a better price, and found Royal Hotel Bedding sheets at less than $90 dollars for a much higher thread count and 20% polyester and 80% cotton, that are just as smooth and comfortable and light weight as my 1500 count sheets. They washed with out pilling right out of the nicely shipped package. One of the best sets of sheets I've bought since perma-press sheets were discontinued. They barely wrinkle that's the tad of 20% polyester in them. Best of all the top sheet is over large to fit an adjustable bed better. We both sleep quite comfortable under them, and no complaints the sheets are to hot.