Stickers are ideal for use as product labels, box and envelope seals and ads for political or guerrilla marketing campaigns. Create memorable marketing campaigns with full color Stickers and Bumper Stickers! Crack N Peel Stickers: Made of 70LB Adhesive Vinyl with slit backing for easy peel Intended for indoor use Bumper Stickers 4mil White Vinyl (Permanent adhesive) Intended for outdoor use