PREMIUM QUALITY: Clearer car mirror back seat without distortion and strong suction fitting to ensure firm adhesion to the windshield window and supporting surface. | ADJUSTABLE BUCKLE AND MIRROR WITH 360 DEGREE OF FREEDOM ADJUSTMENT ANGLE: Good to adjust mirror to have perfect vision & eliminate blind spot. Wider Mirror Reflection Area due to shorter supporting arm. | EASY-TO-USE: Easily attach to any clean , smooth , non-porous surface to provide safety and situational awareness. The magic magic sucker can be washed, and after sticking the dust, it can be restored after washing with water and drying. | UNIVERSAL FITMENT: This mirror car universal for most cars and boats to provide drivers additional rearview support; eliminate rearview blind spot for saftey driving. Shakeproof. with 10kg Suction Power. | TIPS: 9.76 * 2.75 Inch (248 * 70 mm). For better suction result, slightly moisture suction cup before post it to the surface you want. The suction performance may be sometimes affected by cold weather. Simply clean the window and suction cup well and let the suction cup warm up. The suction cup should resume to work fine. Also some of our users suggested " if you coat the suction cup with vaseline it will stick and never come off".