17 x 23 @300 dpi. This is a layered psd background that consists of 11 customizeable layers! The layered file structure allows for maximum flexibility. Simply adjust the color to anything you like using color overlay in layer styles and you are all set. You can move the explosive powder, lightning, and other brush strokes to any area in your image. The perfect companion to the powder, lightning, and fine art brushes. This background will allow you to create customized and memorable images in minutes.