The set consists of 2 vacuum glass boxes (800ml + 1200ml) with glass lids and silicone. A vacuum pump is included and can be charged via the USB to type C connection cable supplied. The lids have airtight clips to hermetically seal the container. The transparent glass lid allows the inside of the container to be seen. The heat-resistant glass base is suitable for microwave, oven (without lid), freezer and dishwasher safe. The different sizes of boxes are stackable to optimize storage. Thanks to the vacuum pump, vacuum packing only takes a few seconds.