L'art, C'est La Vie. Life, More Artistic. Brand: Artcest Contains: 18 x 18 inches, 2 in Package. COVERS ONLY. NO INSERTS. Pillow cover dimensions measured from seam to seam when cover is laid flat. Color Deviation: Velvet has thousands of thick short piles which have different reflectance, refraction or absorbance. Though our professional photographers have tried their utmost to take the pictures to our buyers on an "as-is" basis of the items, sight deviations still result from this. The ambient light, display screens and other inevitable reasons also result in Color Deviation. Inserts Suggestions: These items are the Featured 18"x18" Toss Pillow Shells. The choice of inners depends on how much their stuff being filled. Sometimes, for 100% Hypoallergenic Polyester Inserts, after filling, pillow will decrease about 10% - 15% in size. So, for best results, now we recommend our customers to buy the items together with the 20" x 20" inserts to provide a plump and full pillow from corner to corner. What is Polyester Velvet? Polyester is a synthetic fabric that generally resists wrinkles, fading and shrinking when taken care of properly. VELVET, a closely woven fabric (originally of silk, now also of cotton or man-made fibers) with a thick short pile on one side.