Double-Wall  Vacuum Insulated 350 or 450 ml
The outside surface of the cup will always be at room temperature which makes the cup very comfortable to hold while the vacuumed cup keeps your drink inside cold or hot for a long time. 
Made from pure Stainless Steel
High-quality pure stainless steel on both sides of the cup with no coatings at all. Free from nasty chemicals or toxic contaminants. 
The 350 and 450ml cup are suitable for cold or hot drinks.  The quality of its vacuum insulation is so high, you get a constant temperature for longer.Environmental benefit. The environmental impact one person can have from using a reusable and durable stainless steel cup as a replacement of single-use plastic or paper cups over the years is considerable.