Double walled, hand blown, heat proof glass keeps your beverages hot or cold much longer.  BPA free with no metal or plastic parts, ideal for coffee or tea on the go.  Lid and soft grip are made from heat proof, flavor neutral, food grade silicone. Capacity 425 ml, 15.2 fl oz. The purchase of each Grosche product provides 50 days of safe drinking water for someone in need through the Grosche Safe Water Project.