Pillowflex Indoor / Outdoor Non-woven Pillow Form Insert for Shams or Decorative Pillow Covers (16 Inch By 26 Inch) Use the yellow sizing chart image to the left to select the best size insert for your sham, This 16"x26" insert is recommend for use in a 16"x26" or 16"x24" Sham, Do not use in shams larger than 16"x26" Great loft, give your homes shams a touch of class that will last for years 100% Polyester fiber filling / Shell is made of a polyester and can be used indoors or outdoors Slick polyester fiber helps resit lumping / Great Loft / Polyester cover is hand wash only / Odorless / Hypoallergenic / Lent and Dust Free Made in USA from from American materials