Reduces Hand Fatigue: This triangle pencil grips let writing becomes easy and natural,relieves hand pain,suitable for arthritis and sensitive fingers people Soft Silicone: Soft silicone material,feel comfortable and non-toxic and tasteless,durable Improves Handwriting: The ergonomic writing aid improves comfort and cultivate the correct writing posture,can prevent children with myopia and humpback Anti-skid Design:Let you use more easily, stable and desktop, not easy to slide. Application:Fits on pencils, pens, crayons & many drawing and writing tools.