Swiss Diamond uses tough, heat-tempered glass to ensure that our glass lids provide convenient durability. The adjustable knob can be rotated to open and close the integrated steam vent - this allows the chef to control moisture while cooking, without lifting the lid. Avoid exposing this or other glass articles to rapid heat changes, such as exposing a hot lid to cold water.

• Oven Safe up to 500 degrees
• Knob has adjustable vent to retain or release steam
• Thick tempered glass