100% silicone Car mold. They are random colors and there will be no color selection. Approximate measurement of the tray is 13 Inch X 9 Inch X 1.75 Inch. This mold has 8 cavity. 2 larger cars and 6 smaller cars. Cars are about 4 X 2 X 1.75 inch and 5 X 2 X 1.75 Inch.