Filling 100 polyester backing 100 polypropylene sizes available single 90 x 193cm approx double 137 x 193cm approx king size 153 x 203cm approx this item is nqp not quite perfect slight seconds or factory seconds are all items that have small flaws which prevent department stores from buying them but dont affect the performance you may find some line stitching missing or a join in the fabric or maybe just a dirty mark where it came in contact with the factory floor