600 Thread Count Double Siberian Goose Down Alternative Comforter [600FP, 50oz] with 100% Natural Combed Cotton Stripe Damask Cover - Black White comforter enclosed in Black Damask Stripe Double Size 600 Thread Count natural cotton Duvet cover. DOWN ALTERNATIVE Comforter, 600fp, 50oz, 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. Double Duvet cover measures 90" W x 92" L and includes two standard shams 20x26" each. Machine Wash.