Get ready to see your sidewalk art like you've never seen it before. Use the colorful chalk to create your masterpieces. Then put on the special glasses to see your work in two cool effects: Kaleidoscope and 3D! You won't believe your eyes! Each stick of chalk is dual ended for a total of eight colors and easily washes away with water. This package contains four sticks of chalk, one pair of effect glasses, and a how-to book. WARNING-CHOKING HAZARD-Small parts. Not for children under 3 years. Recommended for ages 4 and up. Non-toxic. Conforms to ASTM D4236.