Cotton 1-Piece Fitted Sheet Only: 100% cotton and sateen weave make the sheets more breathable and comfortable. The grey King sheet measures 78 W x 80 L inches. Deep Pocket & Smart Tag: 16” deep pocket with a stretchable elastic all around the entire sheet ensures a tight, secure fit, staying smooth and snug. A smart tag here clearly indicates the head/foot side. Quality Certified: Our sheets are certified by BSCI and OEKO-TEX Standard 100, ensuring responsible manufacturing and high standards in materials. Warm Tips: High-temperature tumble drying will cause the cotton fabric to shrink and crisp, therefore, please tumble dry on low heat. Wash your light cotton items separately from dark cotton items. The cotton fabric will become softer with every wash. About Color Difference: All Sunflower sheets are for real shooting, and due to technology, display, light, environmental reasons there may be a slight deviation phenomenon, please in kind prevail. Item: 1-Piece Fitted Sheet; 100% Cotton Fabric- It is soft to the touch, and actually get softer over time; Deep Pocket - Perfect thick and full-length rounded elastic with the deep pocket is generously sized to fit your mattress; Machine Washable - Machine wash warm; Use mild & PH balanced detergent; Tumble dry on low; Do not bleach; Warm iron if necessary.