THIS FOOD STORAGE BOX IS MADE UP OF BOROSILICATE MATERIAL THAT LOOKS AND FEEL LIKE GLASS BUT HAS HIGH RESISTANT TO BREAKAGE. IT COMES WITH AN AIRTIGHT LOCKING SYSTEM THAT ENSURES YOUR FOOD DON’T SPILL AWAY WHEN BENT OR PLACED UPSIDE DOWN. PERFECT FOR STORING FOODS, VEGETABLES, FRIUTS, MEAT, FISH ETC. IT IS SAFE TO USE IN A REFRIGERATOR AND ALSO IT CAN BE USED IN THE OVEN OR MICROWAVE. IT IS CLASSY, COMES IN 3 SET AND DISH WASHER SAFE.