We use "Top-of-the-line" calendered Vinyl on all our stickers.It is absolutely the best for outdoor use with a life of up to6 years. They will adhere permanently to any smooth, hard surface and can not be removed without damage to the sticker. All our stickers are available in other colors and sizes. Just call us for a quote.  Many can be done at no extra charge. Our inside Black & White vinyl stickers are removable and have a unlimited life. We have been making stickers for over 30 yearsso you can trust our quality and service. We do ship by usingU.S. Postal Service so be sure to give Amazon your full mailingaddress when ordering.