Serendipio Sheridan Stainless Steel Vacuum Tumbler - 300mlthe stainless steel, double wall vacuum construction of this classic design, bpa free cup will keep liquids hot or cold for hours. Its best used as an on the go coffee cup, or as a tumbler for wine or other beverages when you're outdoors. It has a secure, transparent lid with a sliding closure. The sheridan cup laser engraves to a shiny steel finish, except for the uncoated silver model, which engraves to a natural etch. 11 ( h ) cm stainless steel,