Nanofibre is the most amazing fabric you will ever experience. Made via nanotechnology, Nanofibre resists water and stains while retaining 100-Percent of the natural feel of the fabric. Nanofibre is not a coating and will not wash out, so the product is long lasting. 100-Percent Polyester Microfiber. Easy Care. Set includes Two Jumbo 20-inch by 28-inch pillow protectors.