You are searching through Zazzle's custom Warning Sign postage section, where you can a variety of Warning Sign designs for large custom stamps. Measuring 2.5" x 1.5", large Zazzle stamps are ready to be customized or bought as is. Most Zazzle.com custom stamps ship within 48 hrs of ordering. Change the border color and denomination, or add images and text for free! There's no minimum for custom postage, so make your one-of-a-kind order today! To browse other related products, go to the main warning sign page.