Even if air passes through, it wont let the wind through. Equipped with a "double windshield unit" that affects the flame is even protected with two levels of protection: the outer and inner windshield. With 2 windshields you can achieve a stable windproof effect regardless of the size or shape of your pots or cookware on top. Meanwhile, the air required to burn the flame is drawn from under the inner windshield to support a stable combustion. Porous burner that is short and does not fade due to wind effect; Durable load capacity of 44.1 lbs (20 kg); Dutch oven safe. *Please use an inner diameter of 7.9 inches (20 cm) or less (Dutch oven can be up to 8 inches). Enjoy Cooking Outdoors: You can combine your pot, skillet, and cassette fu accessory series (sold separately) to enjoy a variety of dishes outdoors. Iwatani Cassette Gas and Cassette Gas Junior Cassette Gas Can be used with both Iwatani Cassette Gas and Cassette Gas Junior and Cassette Gas Power Gold.