Typhoon Pure 550ml Cloud Colour Changing Bottle. Add cold water to watch the bottle change colour before your eyes! Bottle will turn blue below 18°C, and back to white above 18°C. Made from robust and strong stainless steel with a flip up straw for easy drinking, the Typhoon Pure range encourages regular water consumption as well as reducing your plastic waste. Features: Typhoon Pure 550ml Cloud Colour Changing Bottle Add cold water to watch the bottle change colour before your eyes! Bottle will turn blue below 18°C, and back to white above 18°C Specifications: Dimensions: H:20.3 x W:7.3 x D:7.3 cm Material: Stainless Steel Model Number: 1612.852