Features: 1) Excellent heat endurance: can withstand drastic temperature change (max. temp. 180°c) 2) High surface hardness: 5 or 6 times of that of normal lids, hard to break, safe to use 3) Handsome styling: high transparency 4) Ideal for the modern kitchen 5) All kinds of type glass lid Inner packing: lined with paperOuter packing: carton