Key Features Double walled insulation & silicone lid Size - 13.5 cm x 8.7 cm x 11.3 cm Materials - Ceramic & silicone Not microwave or dishwasher safe Perfect gift for busy mums! An essential item in any busy mum\'s life! Bearing the very relatable words \'This Mum Runs on Coffee\' this ceramic travel mug will be a much appreciated gift. The mug is double-walled to improve insulation and the design features pretty florals and metallic rose gold. For mums that love (or need) coffee!