HIGH QUALITY BOROSILICATE GLASS:Our glass storage containers are mae from high quality borosilicate glass, which is stronger than cheaper glass foo storage containers, safely go straight from the refrigerator to the microwave or oven to the table. PORTION CONTROL FEATURE:The portion control feature of the ivie glass lunch containers allows you to regain control over your meals. The two compartments glass containers make it easy to organize your meals an keep your iet plan. AIRTIGHT SMART-LOCKING LIS: MCIRCO Glass foo storage containers use snap lock lis that comes with silicone seals to ensure your meal prep foo will last much longer than normal plastic foo storage containers. These lis are easy to use an will stop leaking. These lis will not break or slowly stop working. FOO GRAE SAFE & BPA FREE: Easy to use an easy to take care of, as its safe in the microwave, freezer, ishwasher, an oven. Take off the lis before placing in ishwasher, oven an microwave for better maintenance. 100% CUSTOMER SATISFACTION: If you receive cracke proucts or you are not 100% satisfie with our proucts, please feel free to contact our customer service. We will provie the best solution for you within 24 hours.