1.Each stickers measures 2 inch x 4 inch. 2.Include Voice,Clap,Motion 3 kinds activated stickers. 3.The clap activated are fun to just randomly go to a public bathroom or restaurant and put them above the lights. 4.Put these all over non-motion activated items and the results will be hilarious. 5.Good for messing with coworkers and friends. 6.Used these for joke which will be funny.