King sheet sets are offered in either 100% cotton (typically a sateen weave) or 100% microfiber, depending on the option selected.
King sheet options include sateen weaves with thread counts shown (examples include 300 and 1000). Some microfiber options do not list a traditional thread count and may show it as Not Applicable.
Pocket depths vary by set; common maximum mattress depths listed include about 16 inches, 21 inches, and up to 22 inches depending on the product.
King sheet sets commonly come as 4-piece kits (1 flat sheet, 1 fitted sheet, and 2 pillowcases) or 6-piece kits (1 flat, 1 fitted, and 4 pillowcases).
Care instructions most often recommend machine washing and tumble drying. Some sets also note alternatives such as line drying or laying flat to dry.
Fitted sheets stay secure using features such as deep pockets, elastic edges or all-around elastic, and occasionally top/bottom labels to help position the sheet on deeper mattresses.