Smokeless Fire Pit, Portable Camping Bonfire Stove with Mat for Backyard Patio Picnic, Magnesium Oxide, BlackSmokeless Fire Pit: Keep comfortable when you camp when you finally say goodbye to smoke in your eyes. Our wood burning, smokeless fire pit lets you enjoy warmth and ambiance without any discomfort. Secondary Combustion: This smokeless camping fire pit uses a "secondary combustion" process. Bottom vents feed your fire fresh oxygen from below; this oxygen is heated as it rises up the walls, causing conditions that allow smoke to burn away, resulting in