Dexam Mighty Mug Travel Mug 'the mug that won't fall over' Thermos in Teal Blue 17920228 The World's first unspillable travel mug, powered with Smart Grip technology. This mug really will not fall over when accidentally knocked! Perfect for the working day, on boats, picnics and on the beach. Double wall construction and 0.47L/16 oz capacity Gift Boxed and diswasher safe