Ink+Ivy Nathan Duvet Cover Mini Set in Grey - (King) Cotton Imported A duvet cover is a protective cover for your comforter, most likely for your down comforter. Sometimes its referred to as a comforter cover. Duvet covers are not filled. It has an opening where you can insert your comforter. Filler not included. Duvet & Sham: 100% cotton yarn dyed, 100% cotton percale solid reverse 2 King Shams:20x36" (2) 1 Duvet Cover:106x94" MACHINE WASH COLD, GENTLE CYCLE, AND SEPARATELY. DO NOT BLEACH. TUMBLE DRY LOW, REMOVE PROMPTLY. DO NOT IRON. IF THERE IS NO FREE MOVEMENT IN THE WASHER OR DRYER, USE LARGE CAPACITY COMMERCIAL WASHER/DRYER.