Are you still struggling with taking too much space for the cup while traveling or going out? This collapsible coffee mug would be an ideal choice! This leakproof travel mug features a one-handed operation that allows you to easily open or close it with one hand. The silicone material makes the cup more durable and provides better insulation than glass or metal cups. The folding cup can be easily placed in your backpack or suitcase without taking up too much space. It is convenient for you to carry it to work, school, gym, office, camping, traveling, and more. The leakproof travel mug with lid is perfect for hiking, camping, traveling, and more outdoor activities. The silicone cup is dishwasher safe and easy to clean. Please don't put it in the microwave.