WK-10902 Wandkings bird and window protection, 20 retro circle stickers, protection against bird collisions, black Effective protection against bird collisions. Protects birds from injury and prevents breakage. Simple and quick installation. Peel it off, stick it on, done! Made in Germany! Top quality. Can be removed and reused at any time. Made from long-lasting self-adhesive vinyl film. Delivery includes: Instructions, stickers