The Container has a push-button lid that creates an airtight seal—and doubles as a handle for easy, one-handed opening. POP Round Containers are perfectly calibrated to store common household staples like cereal, flour, sugar, pasta, rice, coffee, nuts, snacks and more. They nest with lids on for convenient storage. POP Containers aren’t just for kitchens: Use them any place you want more organization. For best results, always use the button to open and close. Do not carry POP Containers by the lid. BPA free. Dishwasher safe.