OXO Good Grips POP Containers’ airtight, space-efficient design keeps dry foods fresh and your cupboards organizedNew shapes, sizes and BPA free, dishwasher-safe construction stack perfectly with all POP Containers and can be customized to fit any spaceConvenient fill line makes it easy to store staples like cereal, flour, sugar, pasta, rice, coffee, nuts and snacksBrand-new line of solution-based accessories easily attach to the underside of POP Container lids. Accessories sold separatelyPush the button to engage the airtight seal. The button doubles as a handle for the lid. For best results, always use the button to open and close. Do not carry POP Containers by the lidBPA free. Top-rack dishwasher safe.