Kotatsu quilt and mattress set, 4-foot rectangle, 80 x 120, suitable for tabletop, vintage style, geometric pattern woven kotatsu quilt Maintaining excellent functionality and warmth. The filling is made using a special silk-making technique. Uses hollow structure polyester raw cotton "Toray Mashron Cotton". It has excellent soft elasticity, and the cotton fibers trap warm air, It is fluffy and light and provides increased heat retention. It also dries quickly and doesn't get stuffy, so you can always stay comfortable. It is soft and light to wear, and does not produce much dust, so it is safe for children.