1 Heat Insulated Borosilicate Glass Cup - -- Keep your coffees from getting cold at home, at work and in the office. -- Luxury Double Walled Mug -- A Stylish- Elegant and Special Product -- Double Layered Glass without Handle -- 250 ml -- Height 89mm- Mouth Diameter 80mm- Bottom Diameter 50mm >>> Borosilicate Glass It has a granite-like structure- >> > It is very difficult to wear - >>> It does not scratch - >>> It is very light - >>> It is resistant to high temperatures and also to low temperatures. NOTE: IT IS RECOMMENDED TO HAND WASH FOR LONGER LASTING.