Vacuum Insulation This type of water bottle from IDEUS is made from 304 188 stainless steel 100 BPAfree Advanced vacuum insulation technology can keep the temperature of beverages for up to 24 hours Unique Exterior Designed by professional designers these flasks have a unique and elegant appearance which combines industrial and sporty elements Large Capacity Our thermal beverage dispenser has an ample capacity of 12 Oz 360 ml Suitable for home school and many other occasions Easy to Clean In order to make cleaning more convenient we have consciously widened the mouth of these water bottles Heavy Duty Considering the potential risks in various situations we have upgraded the stainless steel wall and leakproof level and it will make them more durable and serve for a longer time