【What you can get】: there are 24 electrostatic window clings with 12 different types of butterflies, each anti-collision window clings are measuring 5.91 x 5.91 inch in size and offer a delightful colorful life like design seen inside and outside 【Easy to use】: step 1 clean the window with a duster Step 2 spray a mist of water on the glass Step 3, peel the anti-collision window cling from the vinyl backing and place it on the window in any design you like; Step 4, remove the bubbles 【Transparent matte design】: the specially designed reflective material in each anti collision window cling reflects ultraviolet sunlight as glowing warning sign for birds, to humans they appear as frosted or etched glass 【Range of application】: the butterflies anti-collision window clings prevent birds and people strikes; Paste them to glass panels, verandah doors or bay windows, the butterflies decals can act like mirrors with the sun rays reflection 【Note】: When you attach the window clings to the glass, make sure that the distance between them is not more than 6 inches, so as to maximize the effectiveness of preventing birds strike on windows.