Size: Collapses to a mere 2.5cm in height. Sturdy: Crafted from food grade silicone and stainless steel, capable of holding temperature ranges of -20-120 degrees Celsius. Travel mug: Get your hands on a collapsible silicone travel mug. Convenient: A simple way to bring a mug with you anywhere - simply collapse for easy storage and transportation! Colour options: Choose from 4 colours - white, grey, pink or blue.