Endless Fiber Kids' Comforter Set of 2 Washable Includes 2 bonus duvet covers 130cm x 180cm Endless Fiber is a long polyester fiber used in bedding by Nishikawa Living. Because the fibers are long and connected, they are less likely to break and produce lint. Safe for children with allergies. Made of polyester and can be washed. Purchased from Catalog House and used for 8-9 autumn/winter seasons. Includes bonus duvet covers, so you can use them right away. This is a set of 2, so siblings can use them. My family doesn't have allergies, but it was indeed helpful that it didn't produce much dust. Cleaning was difficult when the kids were small... They've outgrown them, but they're still usable, so I'm putting them up for sale. The covers have some stains (see photo 6), but they are included as a bonus. Please let me know in the comments or transaction messages if you don't need them.