OXO Good Grips POP Containers' airtight, space-efficient design keeps dry foods fresh and your pantry organizedNew shapes, sizes and dishwasher-safe construction stack perfectly with all POP Containers and can be customized to fit any spaceConvenient fill line makes it a cinch to store pantry 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 separately.Push 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 lid.BPA free. Top-rack dishwasher safe.