1‎.‎ 316 stainless steel material‎,‎ alkali‎-resistant and acid‎-resistant‎,‎ not easy to rust‎,‎ longer use life2‎.‎ Copper coated ultra‎-microwave vacuum inner‎,‎ reducing heat loss‎,‎ better temperature preservation3‎.‎ Up to 24 hours long‎-acting temperature preservation4‎.‎ Spot‎-spray process‎,‎ anti‎-slip and wear‎-resistant‎,‎ comfortable to hold5‎.‎ Food grade silicone sealing ring‎,‎ will not release hazardous substance while contacting hot water6‎.‎ Separable cover design‎,‎ easy to clean7‎.‎ One hand open and anti false opening design‎,‎ good for different environmentSize‎:‎ 6.5*6.5*24cm Material‎:‎ Stainless steel‎,‎ PP‎,‎ Silicone