Caroline&#039;s Treasures - Butterfly on Gray Fabric Decorative Pillow - Indoor or Outdoor Pillow from heavyweight Canvas. Has the feel of Sunbrella Fabric. 18 inch x 18 inch 100% Polyester Fabric pillow Sham with pillow form. This pillow is made from our new canvas type fabric can be used Indoor or outdoor. Fade resistant, stain resistant and Machine washable..