Since 1882 PRANG Art & Craft solutions has maintained uncompromised quality to ignite the passion of our valued, creative customers. Efficiency without sacrificing quality! Superior Chalk free of foreign materials to create a smooth drawing experience. PRANG Freart Chalk's oversized 4" x 1" sticks provide easy gripping and coloring. Great for use on colored paper and includes 12 brilliant colors to let your imagination flow. These chalks are perfect for outdoor use, must be power-washed from sidewalks. This chalk is AP certified non-toxic.