【Reasons for Shock Absorption】JOYROOM's bicycle phone holder employs an air pressure shock-absorbing spring and an extendable shock-resistant system, effectively absorbing up to 80% of vibrations. It securely holds your smartphone even on bumpy roads. The JOYROOM bicycle phone holder handlebar makes your cycling safer and more secure. 【Shock-Absorbing Silicone】The four corners and panel of the bicycle phone holder are covered with soft silicone, which secures your smartphone more firmly, prevents scratches on the edges and lens, and protects it from impacts. The shock-absorbing silicone edges of the motorcycle phone holder prevent cracks and dents on the smartphone screen, keeping your phone safe even during intense rides. 【One-Step Installation】The bicycle phone holder handlebar is very easy to install, requiring no tools and no complicated installation steps, just one step to rotate. It can be quickly installed and removed on any bicycle, such as bicycles, motorcycles, scooters, and electric bicycles. ⚠️ Note: This bicycle phone holder is only compatible with round handlebars with a diameter of 0.7 to 1.3 inches (approximately 1.8 to 3.4 cm). 【Ultra-Safe】The motorcycle phone holder is equipped with a lock switch to securely hold the phone and prevent it from falling off on bumpy roads or during high-speed riding. The handlebar phone holder is equipped with two soft silicone clamps, which firmly secure the holder to the handlebar, prevent wobbling, and protect the handlebar from scratches.