This is a great option for those of you on a budget but still looking for a quality air bag. This single ply 1500lb capacity air bag that is made from heavy-duty reinforced rubber, which is configured with a rolling lobe bag that help with ride quality. Tapered air springs act like progressive rate coils and increases spring rate through travel. It is a great option for applications that require extended travel and have limited space. Also ideal for load leveling and light towing.