The Treetop Buddies Wall Appliques contains 4 - 12.25 inch x 24 inch sheets of various sized stickers. There are 50 stickers in all. They range in size from 2.5 inches x 1.5 inches to 11.25 inches x 11 inches. They have self-stick adhesive that won't harm walls. The decals are removable and reusable. Just peel and stick.