These decals are educational and decorative.. but also interactive! Experts say that bright, bold colors can positively stimulate a childes senses and positively contribute to his or her development. Learn colors and counting with the help of our wall stickers! Since they can be removed and repositioned at any time, you can move these numbers around as often as you please. Great in any bedroom, nursery, playroom, or classroom! Details:PrimaryDecals vary in size (2'' x 1'' to 3'' x 4.5'')48 decalsPeel and stickRemovable and repositionable For indoor use