Exceptional Durability: Crafted from high-quality borosilicate glass, these containers are non-toxic, odorless, and stain-resistant | Microwave Safe, Oven Safe- can be used as a baking dish, Freezer Safe, Dishwasher Safe | Versatility: Ideal for storing, reheating, baking, and serving your favorite dishes | Smart Locking Lids with Air- Vents (LIDS ARE NOT MICROWAVE, OVEN or DISHWASHER SAFE) gives ease in reheating or storing hot food as air vents let the vapours out and keeps food fresh. | Important Note: Lids are not microwave, oven, or dishwasher safe.