Outdoor fire that's almost smokeless! As the BREEO walls heat up, hot air rises and escapes through a carefully designed line of holes around the rim in the gap between the two walls that make up the shell. Then the oxygen which is heated and pressurized mixes with the smoke and causes it to re-burn. We call this Secondary Combustion. There will still be a little smoke, because it is, after all a fire pit. The benefits are less smell of smoke, you don't have to move your chair around to avoid smoke in your face. (and you know how the wind seems to change every time you move your chair!)