Cotton-Blend, Wrinkle-Free Sheets, 600-Thread-Count Sheet Set, King, Sage Cotton Blend Wrinkle Free Sheets 60 percent cotton 40 Percent Polyester King set includes flat sheet 108X102", fitted sheet 78X80" and fits up to 18" mattress, and 2 King pillowcases 20X40" 100% Luxury and Silky Soft Sheets . Sateen Weave, Single ply . Fits mattresses up to 15-18" deep Pocket with elastic all around the fitted sheet Machine wash in cold water with similar colors. Warm iron when necessary. Tumble dry low. Do not bleach