Material: Plastic. it is safe and non-toxic to use. Size: About 9.7 x 9.7 x 2cm/3.8 x 3.8 x 0.8inch. Extra-smooth writing system provides an effortless writing experience. It starts quickly without dragging, requires minimal pressure from your hand, and delivers crisp, clean lines every time. Can be used as highlighter in daily life.Novelty petal shape, perfect for children.