No more spills - Leakproof 4-hinge locking system forms an airtight, watertight seal between container and lid. You can carry soups and sauces in your bag without worrying about spills.Versatile and long-lasting - Fullstar Containers are refrigerator, freezer, microwave safe (base only, NOT lid, under 5 min, under 700 Watt,*for at least half-full container). Plus these containers are stain-resistant and dishwasher safe, making cleaning a breeze. Perfect for portion sizing - designed with you in mind. This 50 piece set includes 24 containers with 24 lids Food Storage Containers, sticky labels and a chalk pen are great for kitchen and pantry organization and storage. Your well-being is our priority - The plastic contains no BPA, phthalates or other toxins, guaranteeing fresh and healthy meals for your family.