2.5-quart capacity / Airtight seal with the press of a button / Modular stacking system for optimal organization / Container corners allow easy pouring The OXO Good Grips POP Containers are airtight, stackable and space-efficient, making it easy to keep your dry foods fresh and your kitchen organized. The Containers have a unique push-button mechanism that creates an airtight seal with just one touch. The button also serves as a handle to lift off the lid. The Containers are designed for modular stacking so that you can efficiently organize your countertop and pantry. In addition, with their square and recta