Thoughtful service Strict product quality assurance and perfect customer service experience, there are any questions in the transaction, and we will reply to you in the first time.Material: man-made boardsize: 38.5X28X14cm (1cm≈0.4in)If you have any quality problems or dissatisfaction, please contact us, we will answer your questions, please rest assured to buy!All products will pass our quality control before leaving the factory. In case the product is damaged due to transportation and cannot work normally after receipt, please contact us and provide a detailed description of the problem (pictures are preferred). please feel free to contact us via e-mail to solve the problem.