Our Washable Chalks Set includes 162 pieces of chalks in 18 colors ( Blue, Green, Pink, Orange, Purple, Yellow, and more) Let your creative side out and create fun, beautiful designs on your sidewalk, chalkboard, driveway, playground or anywhere you want to add a splash of color. Outdoor Play Chalks will allow your children to get outside and play, and keep your kids busy while creatively learning about colors and shapes. Give them the opportunity to bring all kinds of artworks outside! The chalk can be washed on any surface, you don't have to worry about permanent messes.! PREMIUM QUALITY. Child Safe: Meet the US standard. Safety test approved. Non-Toxic. Conforms to ASTM D-4236.