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. Airtight seal with the press of a button. Modular stacking system for optimal countertop and pantry organization. Square and rectangular shapes maximize space-efficiency. Container corners allow for easy pouring. Pop-up buttons serve as handles to lift off lids. Also great for use in the home office, sewing room, play room and more. Made of acrylic. free. Set includes: 1 x 2.1-quart container 1 x 1.5-quart container 2 x 0.9-quart containers 1 x 0.3-quart containers ; Hand wash.