Seal and waterproof: The thermal mug cover is an anti-scald hinged cover design. You can drink straight from a small throat, avoiding burns and leaks. Don't worry about coffee leaks, start your beautiful day with a cup of coffee. High Quality Material: The travel mug is made of food grade 304 stainless steel, which does not absorb odors or taste, we have high quality standards and you can use it with confidence. Long-term Heat Preservation: The insulated mug body is made of plated copper, and the vacuum design can keep the thermal mug hot continuously for 12 hours.The temperature is about 50C for 12 hours.Copper plating prevents loss of thermal insulation , durable heat and the stainless steel is repaired both inside and out, layer by layer, and heat retention is even better. Unique Design: There are two ways to use the travel mug cover, fun drinking water, one hand light absorbing mouth, anti-scald direct drink mouth. You can drink the coffee through a straw, or you can lift the lid and drink the coffee directly as you like. Provide Better Service: We stand behind our quality and service, wish you love this insulated bottle. If you have any questions regarding your order, do not hesitate to contact us. If there is any quality problems or other dissatisfaction, you can get a full refund or free replacement. Hope you can have a pleasant shopping experience.