This coffee thermos cup is made of 304 stainless steel. It has a simple design and has a double vacuum insulation function, which can keep it warm for up to eight hours. This cup is resistant to falls and high temperatures. The cup body is equipped with anti-slip silicone patterns and anti-slip bottom. It is non-toxic and has no pungent metallic smell. The cup has a large opening for easy cleaning and is available in 13-ounce and 17-ounce sizes. Can be customized according to your needs, welcome to call or send email.