Lock & lock classic, the original type, has reached millions of homes around the world and has gained the highest customer satisfaction. These airtight & leak-proof plastic containers for kitchen are scientifically designed for stacking both upwards and sideways to save space in your kitchen. They can also be used to carry food beverages without the fear of spilling when you are on the go. That gives you every reason why you should go for it. Convenient food-storage containers airtight and watertight made of high-quality bpa-free plastic food-safe and hygienic; microwave- and dishwasher-safe available in a variety of shapes and sizes lock & lock's classic plastic food storage containers come in handy for storing fresh and frozen foods from healthy snacks like cut-up fruits & vegetables to leftovers or dinners for the week. They also work well for keeping pasta, rice, flour, sugar, crackers, cookies, and other cupboard or pantry items fresh for longer, securely stored, and neatly organized. Lock & lock's classic food-storage containers feature an innovative four-sided locking system for an airtight seal & watertight storage so food stays fresh longer and there's no messy leaks or spills to worry about. The containers can withstand temperatures ranging from -4 degrees f to 210 degrees f, making them suitable for use in the freezer, microwave (reheating only), and dishwasher (top-rack). The base and lid should not be used in the oven, under browning elements, or on the stove top. The classic food-storage containers feature a blue hollow-center silicon ring in the lid that helps create an airtight, leak-proof seal. Hygienic and food-safe. Healthy living lock & lock classic food-storage containers have passed the strict hygiene and safety tests of the u.s. Fda and german sgs.