A collaboration with RIVERS. a company that develops products focusing on drinkware. this is a new version of RIVERS' classic tumbler. The material has been changed from the previous version so that it can now be used in microwave ovens. It is lightweight. break-resistant. and has a highly airtight lid structure that prevents spills even if it is knocked over. You will want to take this tumbler not only for everyday use. but also for outdoor activities and travel.
