The Containers by Oxo International are airtight seal with the press of a button. Modular stacking system for optimal countertop and pantry organization. Also, great for use in the garage, sewing room, play room and more. Rectangular shape for maximize space-efficiency. The Container corners allow for easy pouring and pop-up button serves as handle to lift off lid.OXO Rectangle Lid 2.5 Quart-Home