I am always on the search for really great storage containers   and after trying these I can simply say that they are the best! They are color coded so it makes finding the lid to fit fast and simple. The hinged lids also snap and lock so easily into place and make for a tight sealed fit. I feel comfortable putting liquids and virtually any food item into they and love how they are freezer, microwave and dishwasher safe. This set has a great assortment of sizes and even some small screw top lidded container perfect for salad dressings, condiments and toddler snacks.