White Down Alternative Comforter Duvet Insert King Size Goose Down Alternative Comforter is perfect for year round use. HypoAllergenic & Allergy Free Get the Softness and warmth of down but in a Hypoallergenic, Easy Care Microfiber Material; 100% Microfiber Shell and Filling Sewn through End to End box stitching; no shifting of inside filling 1 King Size White Comforter 102" x 88" Washing instructions: machine wash in cold water, tumble dry low