The four-part complete set of our Glass Storage System offers the right container size for every need. All 4 containers are made from high-quality materials and have an intelligent closure system, snapping shut to ensure the contents stay sealed and fresh. * Crystal-clear Tritan lid with removable silicone gasket for easy cleaning and improved hygiene. The Borosilicate glass is shatter-resistant. * 4 latches with real hinges ensure a longer life than so-called living hinges or foil hinges. The container is 100% airtight. * The crystal clear material allows an easy view on the contents of the container. * Food safe, BPA free, freezer safe, fridge safe, oven safe (without lid) up to 260C/ 500F, microwave safe (with loose lid), dishwasher safe, 100% airtight.