Silicone Folding Mugs Made from food-grade silicone material, these collapsible mugs have a capacity of 350ml, are durable, don't take up much space and are very convenient. Foldable and lightweight, when folded, the cups are only 6cm high, so you can easily carry them around in your rucksack, make-up bag, suitcase or hang them up with the included lanyard. These folding travel mugs are versatile and perfect for outdoor camping, hiking, mountain climbing, car seats, outdoor excursions and more. The folding mugs can accept temperatures ranging from -40F to 480F and are odourless, stain-free and flexible. The coffee mugs all come with tight fitting lids to keep dust out of the mugs, and the to-go mugs can be easily washed by hand or in the dishwasher. The silicone mugs measure 3.4 inches in diameter and 5.6 inches in height. The height of the mug when folded is 2.48 inches. The microwaveable coffee travel mug fits perfectly into the zero-waste eco-lifestyle.