Indisputable that it is easy to use because the product is with the adoption of minimalistic feature. With the waterproof and dust-proof feature, it is very reliable and effective. Due to the professional and exquisite workmanship, it is very elastic and durable. It is constructed of silicone material. The length of this product is 8.6cm, the width is 5.93cm and the height is 1.72cm. It is suitable for cycling, bicycle, mountain bike, road bike and so on. Item Name: Protective Shell Material: Silicone Features: Scratch-resistant, Non-slip, Anti-drop Size Details: L: 8.6cm/3.39", W: 5.93cm/2.33", H: 1.72cm/0.68" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Protective Shell