Our high-performance decals may be applied to any smooth, hard surface, including the outside of a window, back of a cell phone, mailbox, wall, door, etc... If you apply decals to dinking glasses or vases (as shown in the photo), do not wash the item in the dishwasher. It is best to handwash them. This mini Airedale decal measures 1.5" wide by 1.25" tall. Each decal is $2.50, or buy five for $10 - it's like getting one free!