The material of our mug, outside is 18/0 stainless steel, inside is 18/10, lid also made of 18/10, rust protection, BPA-free, fall protection. The water cup in a high-quality, double-walled vacuum flask keeps the water warm and ensures it stays cool and comfortable. The vacuum mug in high-end matt finish is easy to clean. The lid is easy to disassemble and easy to clean. Keep your cup hygienic every day! Various colors for your choice. We are committed to offering a high quality and elegant mug. We offer high quality colors such as Classic Silver, Luxury Gold, Magic Rainbow, Stylish Rose Gold, Passionate Red. The whole color is made of Titanium Coating Technology Complete, which is food safe and dishwasher safe Our vacuum travel mug is a good idea for birthday, Merry Christmas, New Year gifts