【HEAT INSULATION,ENERGY SAVING and BASIC PARAMETERS】One way window film blocks out 99% of infrared rays and 99% of UV rays reducing fading and aging of interior furnishings. The heat control window film can retain heat in winter and keep it out in summer, reducing expensive heating and cooling costs. 17% of VLT helps effectively reduce glare.【 EXPERIENCE SATISFACTION GUARANTEENS】No matter what questions in using our window films, please feel to ,we will solved your problem within 24 hours. We are always here for you.【PRIVACY PROTECTION】Attention about window film privacy, there's different privacy effect between daytime and night. The one-way window film provides great privacy during daytime only and outside glass shows mirror effect. As the outside light becomes weaker, the mirror effect of outside glass will disappear gradually and outside people can see inside . When the inside light is stronger than outside, the mirror effect will be reversed. Remember to draw curtain during night.【MULTIPURPOSE HOME OR OFFICE USE】Reflective window privacy film cling can be used in living rooms, waiting areas, bedrooms, attics, enclosed porches, and anywhere windows where you want to block UV light or intense heat.【SELF ADHESIVE】Self adhesive film's life is much longer than the common non-adhesive films in the market, it is easy to install with soapy water in minutes, and easy to remove without any residue left, it can reinforce glass strength. Once the glass is hit by an unexpected impact,it can stick the fragments to some degree and protect your skin from harm.