The Flat-D Chair Pad is a thin White activated charcoal cloth pad that is placed on your favorite chair. The user is virtually unaware of its presence because it is thin and comfortable. It is also inconspicuous to others viewing it. The black activated charcoal cloth pad is washable and reusable. Many users get several months of use out of it. When gas is expelled the pad absorbs the odor normally associated with the gassy discharge or fart. This flatulence filter thin cloth pad has high absorption of flatulence odor or flatus. It utilizes the highest grade of activated charcoal available to guard or protect you for your bloating or digestion output. Many people get months of use out of the Chair Pad.