Are Starbucks Cups Double Walled?
The cups are double walled and are nice and thick. Are Starbucks cups insulated? The Starbucks Stainless Steel Tumbler has a double-walls of stainless steel 18-8 to keep your drinks hot or cold for hours. This is possible because of the tumbler is vacuum insulated , which is responsible for the temperature retention. Are Starbucks … Read more