Stainless Steel 316(the equivalent of European standard 18/8 or American Standard 18/10), harder and more acid-resistant. Easy to clean and does not attract dirt. Easy to use by sliding lid. Removable handles, they can be removed depending on child's need 100% watertight cup, it does not leak even when the lid is open. Double wall : reduce loss of heat/cold and isolates the outer wall making it more comfortable to handle. Easy to clean and hygenic, fully demountable.
