Bedding Design Serena and Lily Tess Collection. Tess pairs a serene dove grey and flax color palette with sophisticated damask to bring a quiet elegance to the room! Duvet is a dove damask 300 thread count 100% cotton. Skirt is made of a 300 thread count 100% cotton fabric, has a 14 1/2" drop length, and is machine washable. A coordinating sheet set, in a mocha trellis pattern, is sold as an option and includes a flat sheet, fitted sheet, one standard pillowcase for a Twin size and two standard cases for Full, Queen, King, and Cal King sizes.