K2C Eco Reusable Collapsible Food Containers: Includes a 500ml and a 1200ml food-grade silicone collapsible food container, designed to take home your leftovers from your favorite restaurant, or pack food items from home.  These containers are microwave safe, light, and compact, making them perfect for carrying around with you. Using these containers can keep thousands of single-use Styrofoam and plastic to-go containers out of the environment each year.