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 a 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.