What you should consider: Some owners of king-size mattresses reported that the fitted sheet was too big.
It is designed for extra deep mattresses up to 18 inches in depth.
History In 1959, Bertha Berman patented a design for fitted sheets that had corners sewn in a way that would fit the sheet to the mattress.
There are deep and extra deep fitted sheets that will reach up to 22 inches.
Different materials feel and behave in different ways.
Where to buy: Sold by and Worth checking out What you need to know: This popular brand name set of flannel sheets features a fitted sheet that is extra soft.