The 520ml 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 2.2 cups, this compact square container is perfectly sized for single-serving meal prep, snacks, or 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.