Goose Down Alternative Comforter, Microfiber-Covers , Diamond-Boxes. Siliconized 7D over-Filled Fiber, Hypoallergenic, Duvet Insert, Barrier on Dust Mites and Allergens, 68"Wx86"H (twin, white) Diamond stitched baffle boxes hold duvet fill with no shifting Machine water washable. Cold or hot., tumble dry low Premium dyeing-stuffs processing. Colors are brilliant, and Last long 90gsm microfiber brushed silky fabric duvet cover Excellent permeabitity. duvet filled with siliconized 7D Fiber