This iComfort sheet is the perfect complement to your iComfort mattress. These sheets are made with extremely soft and breathable TENCEL material, designed to help improve heat and moisture flow. Plus, iComfort sheets are made to securely fit mattress heights up to 16 Inch, even when used with a Serta Adjustable Foundation. Each set contains one flat sheet, one fitted sheet and two pillowcases. Available in Queen, King and Cal King sizes.