Two words Smart Storage. Airtight Smart Storage, the intelligent system for storing your pet food. These stackable storage solutions come in three different capacity sizes: 50-pound, 20-pound, and 10-pound. With large and small access lids, the contents are accessible no matter how you have them stacked. The airtight lids allow you to keep your pet's food fresh for longer.Storing your pet's food has never been easier, more reliable, and simply more enjoyable. Enjoy airtight security with convenient stackability in multiple sizes.