We are always on the lookout for imaginative, eco-friendly art supplies made in the US. In this case, we're even more excited to share, because this product has quickly become a favorite stand-by for birthday parties and stocking stuffers among family and friends. Created by a special needs teacher to aid with proper gripping techniques, our Crayon Rocks nestle right into little hands and make broad strokes of color in 16 bright shades. They are designed to strengthen the tripod grip muscles which makes them perfect for children with motor disabilities, as well as for every day activities when they are just plain fun. Made of soy wax and tinted with natural mineral powders, each set comes packaged in a handy storage pouch. Non toxic. Since the crayons are made of soy wax do not leave them in direct sunlight for prolonged periods of time. USA. Warning! Choking Hazard. Made for ages 3+.