Welcome! Commodity Material: Environmental Protection and High Quality Silicone Shell Warm Tips If there are minor defects in mass-produced consumables, please forgive the customers! The quality of the products will be checked. If there is a quality problem, we will return the package and replace it. You can contact us whenever you have any questions. If you have any questions, you can consult us by chatting with us. hank you for your care. I look forward to your next visit. I wish you a happy life