Materials: rubber construction, not easy to crack and sturdy for long time use. Main Effect: Designed to prevents vehicle from moving by keeping wheel in place. Portable Design: The compact size allows for convenient put in your car while not take up too much space. Stable Performance: Heavy duty construction keeps vehicle steady, sturdy in use. Easy to Use: for easy pick up from ground, prevents tires from rolling. Colour:As Shown Material:Rubber Package Contents: 1x Car Wheel Stopper 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.