300 Thread Count King Siberian Goose Down Alternative Comforter [600FP, 50 Oz] with 100% Natural Combed Cotton Plain - Solid Damask Cover - Blue White comforter enclosed in Blue Plain - Solid King Size 300 Thread Count natural cotton Duvet cover. DOWN ALTERNATIVE Comforter, 600FP, 50 Oz, Allergy free.Box-stitching design and Side-Gusset for the Maximum warmth. Luxury Duvet Cover sheet Set made of Long Staple natural Giza Cotton yarn. King Duvet Cover set measures 106" W x 92" L and includes two king shams 20x36" each Machine Wash.