When it comes to 21st century problems a top one has to be the agonising disappointment that comes when you enthusiastically (but mistakenly) gulp down a cold brew. It can really put a tea stain on even the happiest of days. Well, worry no more – our clever Koala Mug is the ultimate in solutions. Made from high quality ceramic (and not suitable for the microwave or dishwasher), this cute addition to your kitchen cupboard is jolly clever. Just add boiling water & see him magically change colour – from dark grey when empty to light grey when full. This means that with a quick glance you will now be able to gauge the temperature of your cuppa – what could be simpler.