Static cling or decal sticker comes with the words "ALERT AUTISTIC CHILD MAY NOT RESPOND TO VERBAL COMMANDS". With the static removable cling you can stick it on the inside of your window and remove it with ease by simply pulling it off and then you can reuse again and again. Decal sticker is a one time usage. Dimensions 2 1/2" x 3 1/4". Made in USA.