1. Material: silicone 2. No peculiar smell, no fading 3. Firm and non-slip, comfortable to hold the pen 4. Applicable model: apple pencil 5. Micro frosted silicone, round hole grooves for non-slip 6. High tensile strength, multi-color design, no staining and no ash 7. Size: length 7.5cm 8. Weight: 10g