stainless steel vacuum thermos mug with stainless steel top and bottom, leak proof both ... make all kinds of coffee pot ,coffee mug ,coffee cup ,beer cup ,beer mug,travel mug , travel bottle ,vacuum flask,vacuum thermos ... grade material.4,leak proof lid.5,keep hot for 24 hours and cold for 6 hours.6, logo option ... ,FDA,ISO9000;ISO9001 200ML stainless steel vacuum thermos mug