Moxstar Stainless Steel Coffee Mug with Lid is made from 100% food-safe and BPA-free material. This Personalized Stainless Steel Coffee Mug is made of 18/8 premium stainless steel that is non-toxic and rust-free. Plus, it has a food-grade silicone vacuum seal lid that prevents leaks and spills. This beautiful steel mug is the perfect choice for both summers and winters. Due to its double-wall insulation, the travel mug can keep beverages ice cold for 4 hours and hot for up to 4 hours. In fact, the stainless steel mug is great to carry coffee, tea, juices, smoothies, etc., to office, gym, school or trip. Coming to its cleaning aspect, this has a wide opening that helps to clean its interior easily. It is dishwasher safe too!