The car shakes, I don' shake. Tightly fitting with the first perspective, accompanying you to climb mountains and water, fearlessly Adjustable design for better fit with helmet, can be bent and adjusted without lifting the helmet, suitable for types of helmets Multi location installation Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:As Shown Material:Plastic Package Contents: 1 * Bracket 2 * Flat and curved bases (1Pcs each for flat and curved surfaces) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.