Description from Amazon
Wallies Dry Erase Squares Peel & Stick Decals are made of durable, self-adhesive backed vinyl and are easily removable and repositionable. To use, simply peel Wallies off of the backing and apply. To remove, just peel. Wallies will not harm or damage surfaces and will not leave a sticky residue. Each package includes 4 white dry erase decals measuring 7 inches by 5-3/4 inches Pen is not included. Packaging measures 7-1/4 inches by 6.5 inches.