Now Designs Spectrum Cushion, Cobblestone Cushion measures 17 by 17-inch Exterior is made of 100-percent cotton, removable fill insert is made from polyester Chic and simple 3 button closure Durable, thick cotton cover is machine washable Same colored piping finishes the look Cushion measures 17 by 17-inch Exterior is made of 100-percent cotton, removable fill insert is made from polyester Chic and simple 3 button closure Durable, thick cotton cover is machine washable Same colored piping finishes the look