PREVENT BIRD STRIKES - Prevent beautiful real birds from flying into your windows with these 4 decorative Hummingbird anti collision window clings. INSIDE AND OUT - Each individual design is printed double sided using our innovative print process so decorate both the view from inside and outside of your windows. UNIQUE - Each design is completely unique and printed slightly translucent so as to catch the . They are all sized approximately 16cm x 10cm. NO MESS - Static cling means no adhesive, just a fine spray of water to apply which means no lasting damage to your windows and your Hummingbird stickers can be moved easily and be re-used muliple times. Convenient and reusable: step 1, clean the window with a duster, step 2, spray a mist of water on the glass, step 3, peel the hummingbird window cling from the vinyl backing and place it on the window in any design you like If you want to rearrange it, simply peel it off and move it around. Color: multicolor Material: PVC Package Contents: 2 sheets (4 per sheet) x Hummingbird Anti-collision window clings Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.