ColorfulHall Window Tinting Film Heat Rejection One Way Glass Solar Film, Black, 23.3-Inch by 6-1/2-Feet HEAT REJECTION: It rejects 91% heat and sunlight by reflecting them away before they pass through the windows, makes your home/office cooler and pays less fees in your monthly bill by the air conditioner DAYTIME PRIVACY: This one way mirror window film offers the daytime privacy only, while the others will see through from outside to inside at night since the side with stronger light will have the mirror-like appearance UV BLOCKER: It blocks up to 99% of harmful UV rays which protects your valuable furnishings from fading and provides a "sunscreen" for your skin against the sun EASY APPLY: This window tinting film is applied inside of the window for heat rejection purpose,do not apply it outside. And the secret for easy apply is water, water and water ASHESIVES AND SAFETY: Made from environmentally friendly PVC and PET release liner,has passed the EU 6P environmental testing,does not contain any chemical odor and there is no residue will be left on the window when you peel it off