About this item ?MAKE RAINBOW PRISM- Capture the suns rays and turn them into bright rainbows throughout the room.There are 1 set of 20 pieces. ?SAVE BIRDS- These window decals work as a bird strike deterrent,stop birds from hitting your slider glass doors ?EASY CLEAN & NO MESS- In assorted sizes and shape so you can create a unique window display,These window cling stickers can be applied to glass doors,patio door,sliding glass doormake sure the glass surface is smooth and clean.Window stickers are made from static cling means no adhesive,just a fine spray of water to apply which means no lasting damage to your windows and these window decals remove easily to adjust placement ?NO ADHESIVES,NO RESIDUE- Our window clings are made of high-quality materials, sturdy to attach to the window and easy to peel off. they all can be removed from windows and won't leave a sticky residue.