1. Material: Silicone 2. Made of food-grade silicone material, comfortable to the touch, safe and odorless 3. Tightly fit the body, accurate fit 4. The hand feels comfortable, and the hand is not tired when holding the pen for a long time 5. Easy to install, can be used when put on 6. Adhere closely, not fall off 7. Note: Only the pen holder will be sent for delivery, nothing else!