... grade material 18/8. 3:It is designed with filter. Thermos is double-walled and vacuum design and can keep liquids ... hot or cold for 12 hours and Double wall thermos is used mainly in company,house,university,hospital ect.There ... are 3 capacities:300ml,340ml,420ml.Thermos bottle configuration:seamless fabric,durability bottle.unbreakable to fit into ...