Space-saving storage, maximum flexibility: With the ZWILLING UNLOCK All-in-One System. Fresh and smartly stored: The ZWILLING UNLOCK bowl set includes two stainless steel bowls (16 cm & 20 cm) and matching flat vacuum glass lids with silicone seals. This allows you to prepare, serve, and store without any transferring. And thanks to the vacuum technology, your food stays fresh up to five times longer compared to traditional storage. Stackable and space-saving in shelves, refrigerators, or freezers. Dishwasher and oven safe up to 180 °C – the ideal set for meal prep and sustainable food storage.