size: approx 2.5 inches each sticker is made out of waterproof vinyl and can go on laptops, water bottles, tumblers, etc! these make perfect gifts for people! the stickers are coated with a laminate to make them last longer. the laminate also protects the stickers against UV rays. if you put this sticker on a water bottle, tumbler, or mug, it is best to hand wash it.