The Square container from LocknLock is durable and features an airtight container that has been constructed from safe BPA free materials which also allows it to be microwave safe. The versatile container is also dishwasher and freezer safe, this ensures you can store your leftover food safely in the freezer, they have hinged clips that equates to extra freshness.Square Container FeaturesLocknLock Square ContainerMade from plasticHinged clipsWatertight sealRubber sealMicrowave safeDishwasher safeSafe BPA free materialsFreezer safeLocknLock's Ref.MPN: Colour: ClearSizes: 870ml and 2.6LPM Ref: 700132