GROSCHE BERLIN Hand Blown Double Walled Glass Mugs 12 oz. Set of 2. Set of 2 GROSCHE BERLIN Double Wall Cups 350 ml capacity 12 fl. oz each Unique GROSCHE DUOTHERM Technology manes this a very special set- it keeps your drinks hot or cold and you wont feel the heat or cold on your hands! A design masterpiece - Your drink will "float in thin air" in this cup! Perfect for coffees, teas, juices.. makes any drink a real pleasure! The Purchase of this product will create 5 days of safe drinking water for someone in need through the GROSCHE SAFE WATER PROJECT - For more information, please visit the manufacturer's website at www.grosche.ca/safewater