Great art starts with great products. Louis Prang developed child-safe art products that uphold the highest standards of quality in materials and color. These standards are maintained today in a comprehensive line of Prang art products for both children and professionals. Prangs unique blend of soybean oil and brighter, more intense pigments make these Prang Crayons brighter, smoother and less flaky than ordinary wax crayons. Blend them together for an even more extensive color palette. This master pack is a great value for classrooms, camps, or any place that uses large volumes of crayons. The unique storage box with carrying handle is a convenient way to keep crayons together in on solid, refillable container. These crayons are AP certified non-toxic. Be bold, color your world, and discover Prang power.