Size - 5 inches on longest side 6 mil thick vinyl for easy application. Colors are printed with ultra-violet (UV) fade resistant inks usingFlexFire print heads. Every drop of ink falls exactly where it is intended, delivering beautiful images and uniform colors. Durable, weatherproof- 100% waterproof Suitable for indoor or outdoor use - Can be applied to any smooth surface. Use indoor or outdoors Warranty against discoloring or fading. Designed by StickerU and Made in USA High quality bumper stickers printed in high resolution to capture every detail of the image. We make our vinyl stickers with premium outdoor vinyl to withstand exposure to wind, rain and sunlight. The vinyl is 6 mil thick making it one of the thickest vinyls in the industry. This allows for easy application and control. Its also thick and not cheap thin vinyls like some competitors use. Will stick to just about any surface. Made in USA