Space-saving storage, maximum flexibility: with the ZWILLING UNLOCK All-in-One System. The ZWILLING UNLOCK vacuum lids (16 and 20 cm) made of durable borosilicate glass with a flexible silicone seal fit perfectly on UNLOCK bowls, pots, and pans of the appropriate diameter. This allows you to prepare, serve, store, and reheat – all without transferring. Thanks to vacuum technology, your food stays fresh up to five times longer than with traditional storage without vacuum. Ideal for shelves, refrigerators, or freezers. Additionally, they are dishwasher safe for easy cleaning. UNLOCK: Perfect for meal prep and sustainable food storage.