Perfect for anyone who would like to enjoy a tea or coffee whilst out and about: the flip insulating mug 350 ml by Leifheit. This is 100 % watertight and therefore completely leak-proof. It can also be quickly and easily opened one handed without the need to put it down. The push-button to open the lid can be comfortably operated using your index finger. An additional lock on the lid prevents accidental opening: so your mug can be put in your bag without needing to worry. The lid also has a soft-grip surface, which ensures a better grip and means it is easy to open. With the help of the fold-out handle, the flip insulating mug 350 ml is not only comfortable to carry, but this also provides the option to attach it to a rucksack or bag. A removable filter enables the addition of herbs without interfering with your drinking. Thanks to the double-layer insulation made of stainless steel, drinks remain hot for up to six hours with the flip insulating mug and cold for up to 18 hours. With its compact size and capacity of 350 ml, it is perfectly suited to everyday use and fits perfectly into most coffee machines. Naturally this mug is free from BPA as well as other harmful substances, therefore 100 % harmless. The blend of attractive stainless steel design and the fresh, fashionable colour light blue make the insulating mug a real eye-catcher. Also available in black, silver, dark blue, red, kiwi and purple.