SAFTY BPA FREE---Small plastic water bottle, thick & light weight. Made of environmentally friendly BPA free materials, toxin free. The reusable hard plastic bottle is durable and high-temperature resistant, It does not have peculiar smell. It can be filled with hot or cold water during -10-100℃ without distortion, also it's drop-resistant, won't break even if fall from a great height. To prevent burns, it's better not to put hot water more than 60℃.