Hot Wheels Color Reveal contains two Hot wheels Color Shifters cars with water reveal. When you open the package that looks like an oil barrel, you will find two colored cars. Fill the barrel with water and wash your cars to see which ones you got. Then put them in cold/hot water to change color.There are different cars to collect, which ones you get and what color they are before you wash them is a surprise.Dimensions: packaging approx 10.5x8 cm.Not suitable for children under 3 years.