The 800ml square glass food storage container is crafted from high borosilicate glass engineered to resist thermal shock and withstand heat up to 750°F, making it safe for the oven, microwave, and freezer. The FDA-approved food-grade PP lid fits snugly to deliver an airtight, leak-proof seal that locks in freshness and prevents spills during transport or refrigerator storage. At 3.4 cups, this mid-size square container handles generous meal prep portions, salads, pastas, or family-size leftovers, and its sleek square shape stacks efficiently to keep your kitchen organized. The non-porous glass surface resists stains and odors and is fully dishwasher-safe for easy everyday cleanup.