This Cambro RFSCW4135 Camwear 4 qt. round food storage container is made of crystal clear, virtually unbreakable polycarbonate that won't be stained or harmed by food acids, oils, or alcohol. Complete with easy to read imprinted graduations on the outside, it's simple to see how much is in each container. After washing, place it upside down to dry. The molded-in holes in the handles make sure they don't retain water.The temperature range on this container is -40 degrees Fahrenheit to 210 degrees Fahrenheit, making it perfect for use in refrigerators and freezers. Attach the lid (sold separately) to keep your ingredients and food fresh and ready to use!