These glass meal prep containers are made from durable borosilicate glass, designed for versatile food storage and preparation. They withstand high oven temperatures up to 700℉, are freezer safe, and microwave safe without the lids. The set includes ten containers and ten matching BPA-free plastic lids with silicone seals for airtight, leak-proof performance. Containers nest neatly to conserve storage space and are dishwasher safe for easy cleaning, though hand washing lids is recommended to preserve the silicone gasket. Their clear glass construction allows quick identification of contents, and the smooth interior surface resists staining and odor retention. Ideal for portioning meals, storing leftovers, packing lunches, or organizing pantry items, they support consistent daily use across home, office, gym, and travel settings. The lead-free glass meets safety standards for repeated heating and cooling cycles, while the stackable design enhances kitchen efficiency. No decorative coatings or adhesives are used, ensuring long-term clarity and structural integrity.