Push-Button Airtight Seal-: Containers' airtight seal, space-efficient design keeps dry foods fresh and your cupboards organised. Dishwasher-safe- Made of high quality BPA free material, our air tight containers are durable and shatterproof. The container is clear, you can identify the contents without opening them. Dishwasher-safe. Construction stack perfectly with others containers. Easy storage- Convenient fill line makes it easy to store staples like cereal, flour, sugar, pasta, rice, coffee, nuts and snacks. Easy to use- 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. Child Lock-: Equipped with a child lock to prevent children from misuse. If you have any questions, please feel free to contact us :)