Smart storage: this easy essentials(tm) storage container set is microwave safe, dishwasher safe, and ideal for dry ingredients, vegetables, leftovers, Coffee beans, nuts, grains, rice and more Durable: unique, patented 4-hinge locking system is durability tested for long-lasting performance Up to 3 million uses No mess, stays fresh: enhanced silicone seal is 100 percent airtight to keep foods fresh Longer and 100 percent leak-proof to prevent unwanted drips and spills Bpa-free: peace of mind for healthy, happy food storage Versatile: provides a convenient, all-in-one storage solution for the refrigerator, freezer, and pantry Lifetime Limited