Benefits of Side Window Deflectors - Reduce wind noise, de-mist windows, ciculate fresh air into the car and minimize heat build up. Unbreakable - Door Visor is Injection molded & Flexible Abs Material Tape-On deflectors - Affix to the window frame with strips of pre-applied, automotive-grade tape. Easy installation without drilling or any special hardware. Enhances the Appearance - Quick upgrade that will help air circulation as well as that customized exterior finish. Package Content: 4 pcs Window visors. High quality acrylic plastic With double-sided adhesive tape.