About this item THE COTTON-VISCOSE DIFFERENCE: Made using the 80% cotton and 20% viscose, these sateen sheets are a class above the ordinary. Naturally moisture-wicking, cotton-viscose sheets stay cool to the touch all night long to provide you with the ultimate in comfort, no matter the season. GLORIOUS SHEEN WITH SATEEN: Masterfully crafted with a sateen weave, the one-yarn-under and three-yarn-over technique exposes more thread surfaces, giving your bedding a silky feel and luxurious sheen. PERFECT FIT FOR YOUR MATTRESS: These sumptuous sheets feature a patented True Grip fit technology which consists of a 1-inch wide boxer elastic on the edges along with ½-inch elastic on the drop, providing a snug fit assembly with varying depths of mattresses. It also features a "Smart Head/Foot Tag" to indicate which side it belongs to for ease of use. WHAT'S IN THE SET: This King size sheet set includes 1 flat sheet (108 inches wide x 102 inches long), 1 fitted sheet (78 inches wide x 80 inches long), and 2 king size pillowcases (40 inches wide x 20 inches long) to best suit your requirement. WE GUARANTEE ONLY THE BEST: This 4-piece set is factory-certified by STANDARD 100 by OEKO-TEX, STeP-Certificate (Made in Green), OHSAS-18001, BSCI, ISO-14001, ISO-9001, and LEED Certificate from US Green Council so you rest assured of the quality with a guarantee.