【4-Piece Round Glass Containers Set】These airtight glass containers come in four sizes: 210ml, 400ml, 650ml, and 950ml, suitable for storing various foods like meal prep, lunches, frozen rice, and fruits. They are stackable and compact for space-saving storage. Package weight: 1.7kg, Package size: 20.5*20.5*16cm. 【Leak-Proof Seal & Freshness Preservation】The glass containers feature an improved airtight 4-sided locking lid, rotatable 180°, and highly durable. The four corners of the storage container are completely sealed, and the lid fits tightly, preventing food from contacting air, thus keeping meal prep, rice, vegetables, and fruits fresh for a long time. The high-quality silicone gasket and the four corners provide a complete seal, preventing leaks and odor transfer, and keeping food fresh for a long time. 【Microwave & Oven Safe & Freezer Safe】Heat resistant from -40℃ to 500℃! It can be used for a wide range of applications, from refrigeration and freezing to microwave and oven heating. The glass containers have a thermal shock resistance of 120℃, so you can serve food directly on the table after heating it in the microwave or oven. Dishwasher safe for easy cleanup! (Note: Remove the lid when using the microwave/oven; do not use direct fire). 【High-Quality Materials】Made of high-quality borosilicate glass, which is excellent in strength, transparency, and acid resistance. It is impact-resistant and scratch-resistant, making it suitable for storing dishes containing acids and salt. The transparent body of the food storage container allows you to see the contents at a glance, making it easy to check the food in the refrigerator even on busy days. 【BPA-Free & Space-Saving Design】BPA-free and made of environmentally and body-friendly materials, the lids are also dishwasher safe for easy maintenance. They can be stacked for storage when not in use, saving space. Heat-resistant glass storage containers, round set of 4, airtight glass tupperware, round, meal prep, food storage, microwave and oven safe, freezer safe, BPA-free, space-saving storage