Note: 1. Do not scratch with a sharp tool to indicate leather. 2. Do not cover the hand warmer in a large area during use to avoid overheating the table mat. 3. Do not place the table mat under the glass plate or on the glass table. 4. Please turn off the power immediately after use. 5. If water splashes on the switch or junction box, please cut off the power immediately. 6. Do not put this product in water for cleaning. 7. Do not place notebooks, mobile phones, etc. on the table mat during use, so as to avoid overheating the electronic products.