This Lock & Lock Top Class Glass Square Container is perfect for everyday use and is conveniently fridge, freezer, dishwasher, and microwave safe. The 500ml container will hold your sandwich perfectly for your lunch break or be great for storing leftovers in the fridge. Made from high-quality borosilicate glass and a 4-side locking system each container features an airtight and leakproof lid. The titan lids feature a 4.8mm-high edge for more secure stacking. The transparent and clear glass designs make it easy to identify the contents of the containers when storing in the fridge, freezer, pantry or when reheating in the microwave or oven. This versatile and durable is ideal for heating or cooking in the microwave or oven (up to 400°C). 
Features:

• Borosilicate glass containers with a stackable Tritan lid for more efficient storage and added durability
• Borosilicate glass containers are safe to use from oven to table and are heat resistant to 400°C. Suitable to transport food straight from the oven to table; or freezer to microwave in one step
• Lid designed with a 4.8mm-high edge for more stable stacking
• Lid made from Tritan which is robust, less prone to staining, and transparent making it easy to see the contents
• Lock & Lock’s patented 4-side locking system means the container is 100% airtight and leak-proof

• Oven (to 400°C), Microwave, Dishwasher and Freezer Safe
• Remove the lid when in oven
• Do not place frozen dishes directly in an oven
• Content may expand in the freezer: avoid over-filling with foods of abundant moisture, do not freeze liquids such as soup
• Wash with care: do not wash with abrasive detergents of steel or nylon sponges which may cause damage