From J. Queen New York, this mattress topper features: Plush 300 thread count Cotton An additional layer of cloud-like comfort Topper is filled with down-like hypoallergenic fiberfill which provides superior support and a silky smooth surface ComforDry™ technology which helps keep your sleep surface cool and dry by wicking away moisture for a more comfortable night's sleep NuAir™an allergen-barrier fabric to guard against dust mites, pet dander, pollen, and other allergens from penetrating the bedding Box quilted to prevent fiber shifting Approx. 2" gusset on all sides for added loft, support, and breathability 4-way deep pocket stretch skirt can fit up to approx. 21" mattress Main: 300-thread count cotton Reverse: Polyester Fill: Polyester Fill weight approx. 20-oz.  Twin approx. 39" x 76" Full approx. 54" x 76" Queen approx. 60" x 80" King approx. 78" x 80" California King approx. 72" x 84" Hypoallergenic care; machine wash cold Imported. J. Queen New York Regency 300 Down Alternative Mattress Topper