999 pure silver liner, 304 stainless steel tea drain sterling silver insulation layer can keep the temperature to the greatest extent and keep the liquid hot for 24 hours. Durable and hygienic pure silver material and double-layer structure are cold to the touch with hot liquid inside and outside, pp gasket, 360-degree water leakage and sweat proof. The simple, stylish and compact design occupies the smallest space while maximizing the capacity. Material: 999 pure silver liner Capacity: 210ML Item weight: 40G Size: 170*60MM