With an airtight solution for food storage, each BPA-free food glass storage container with a secure, silicone lid with seal. Simply stack in your fridge, cupboard or wherever needed. The easily stackable containers are also safe for use in the dishwasher, freezer and refrigerator. How to open and close our Homiu silicone containers correctlyTurn all 4 silicone tabs downwards as shown in the image on the right.Once all the tabs are pushed down into their original position, the lid will be closed and airtight. Features: High Quality- This 5 pack of Homiu glass storage jars are made of borosilicate glass with a high-quality silicone sealed lid. Each container is hard-wearing, airtight, stackable and strong. Each jar is equipped with a silicone and glass lid, this helps to maintain the airtight seal of the jar and keep food or spices longer. High Quality and Clear Design- The jars are transparent, this allows you to see clearly what is stored inside and how much is left. There are 4 sizes