4-Color Process Bumper Stickers are suitable for outdoor use. Popular uses for these decals include product recognition, cause related messages and general advertising. These bumper stickers are supplied on pressure-sensitive white vinyl. The bumper sticker's high initial tack makes for easy application, yet they can be removed within 6 months of application. For back imprint, simply add the "Back Imprint" price. If more than 5 colors are needed, additional production time may be required. 11 1/2" W x 3" H