Liz is a digital, self-cleaning thermal bottle produced by the French brand Noerden. Its main strength is its technology: it has a built-in sterilisation system that uses UV rays to eliminate 99% of viruses and odour-causing bacteria. The lid is equipped with a capacitive touch-sensitive sensor and LED light that indicates the liquid temperature via an infrared sensor. Tap once to check the temperature, tap twice to start sterilisation. If the bottle is not touched for 2 hours, the bright LED on the lid flashes to remind you to drink. Thanks to the double-layered wall Liz keeps drinks hot or cold from 12 to 24 hours. Liz is designed to contain any kind of liquid: it is compatible with all colourings, whether natural or artificial, and no chemical can damage its interior, which is made of 316L surgical stainless steel. It has a 500 mAh lithium battery that lasts about a month with one UV sterilisation per day, and can be recharged via a USB cable. It has a capacity of 480 ml and its interior is made of stainless steel. It is available in white, black and red and can be customised with logos by laser engraving.