Car Cup Holder, YOKKAO Car Phone Holder Air Conditioner Vent Mount Insert Soft Water Cup with Adjust Size for Smartphone Vehicle Automobile (Black) RUBBER CONSTRUCTION - The high quality rubber constructive design guarantees anti-slippery and keeps your smartphone or your soft drink/beverage/ water/ coffee cup in place regardless of road vibrations. WHAT COMPATIBLE WITH - This holder compatible with most of Smartphones and GPS devices. With adjustable brackets, the base can be stretched about 2 cm so as to fit any size of mobile phone. NOTE- It is hard to install if the blade of the air outlet is very thick and round. Three kinds of air vent are suitable in fifth image. Please note that the cup capacity is app. from 190-500 ml please don't put heavier ones. EAY YOUR DRIVING - Appropriate elasticity makes it easy for you to put in and pull out your phone and drinks. It will helps to ensure a safe driving environment. WHAT WE CARE - We don't care about any profits or any earns. What we DO care about is that customers have happy purchasing experience and TRUST Yokkao brand after the first using. It is a great decision if you choose Yokkao.