•Guaranteed freshness: they close airtight so you can keep your food fresh for longer in the fridge, freezer, or out of the fridge. •Air removal valve: keep your food in vacuum by removing the air with the Bosch ErgoMixx Fresh blender bar or the VitaMaxx blender. •Durable food container: from unbreakable BPA-free Tritan, suitable for use in microwave ovens and washing in the dishwasher. •Multi-use food bags: From BPA-free food material suitable for contact with food, they close airtight, have a special air exhaust valve for food preservation in empty air conditions and are washed in the dishwasher. •Air outlet valve: remove air with the appropriate Bosch device.