Lock & Lock - Euro Glass Boroseal Heat Resistant Glass Square 750mlConstructed from Borosilicate Glass, Boroseal glass containers are safe to use from oven to table and are heat resistant to 400C Patented four hinge locking system with a silicone seal ensures the container is 100% liquid and airtight, keeping food fresher for longer Suitable to transport food straight from the oven to the table; or freezer to the microwave in one step Stain and odour resistant material, preventing the container from absorbing food