The lid is made of borosilicate glass, featuring chemical inertia, transparency and heat resistance. It is therefore ideal as an accessory for all cooking tools. Resistant to scratches and thermal shocks up to 300������C. The instrument allows good steam circulation thanks to its rounded shape. The shape is suitable for all common shapes of pots and pans of the indicated diameter. Anti-scald thermosetting knob with rotary valve to let steam escape without having to lift the lid. Dishwasher safe and totally hygienic (does not retain bacteria).