Safe and Healthy Materials: Made from heat-resistant borosilicate glass, this set is non-toxic and safe for microwave use, preserving the natural taste of your food and protecting your dietary health Innovative Leak-Proof Lock Design: Featuring a unique locking system that tightly seals the containers, ensuring no spills or leaks. Whether carrying soups or sauces, you can transport them without worry of tipping or leaking, keeping your bag dry and clean Microwave-Safe for Direct Heating: Designed especially for busy professionals, there's no need to transfer food to another plate. Simply place the container in the microwave to heat up your meal, saving valuable morning time while enjoying a hot, homemade dish 12-Piece Complete Set: Includes a variety of container sizes to suit different portion needs and meal types. Whether it’s a light salad or a hearty main course, this set has everything you need Easy to Clean and Store: The smooth interior surface prevents food from sticking, making cleaning a breeze. The set also comes with a dedicated storage rack, helping you keep your kitchen organized and clutter-free Specifications: Material: borosilicate glass + PP Quantity: 12-piece set (different sizes)