Designed for children over 3 years old, Kitpas Rice Bran Wax Crayons offer a smooth and vivid drawing experience, suitable for both young children and those with underdeveloped motor skills. These crayons are perfect for creating watercolor-like drawings - simply add a few strokes with a Kitpas water pen and watch your artwork come to life. Safe for use on any non-porous surface, such as windows, mirrors, and white boards.