Window Alert is a static-cling decal that may be applied to home and office windows. The decal contains a component which brilliantly reflects ultraviolet sunlight. Ultraviolet light is invisible to humans, but glows like a stoplight for birds, whose vision is up to 12times better than that of humans. These decals help birds "see" windows and avoid striking the glass - protects both indoor and outdoor birds.
Choose from a leaf, a butterfly or all new hummingbird design. Set of 4 decals.
Each design measures approximatley 9.75" x 6."