Bedsheets don't get much more luxurious than this. The fitted sheet, flat sheet, and two pillowcases are crafted of cotton with an extra-long staple for maximum softness and durability; what's more, the fabric has a sumptuous 420 thread count. The flat sheet and pillowcases have a four-inch cuff accented with a single-row satin-stitch embroidery. With a 17-inch gusset, the fitted sheet can accommodate mattresses as thick as 21 inches.