High quality bags. The fabric also provides a filtering function, which ensures three levels of filtration to my cleaner Philips Silenstar FC9304: filter through filter bag + engine + hepa filter output. When full, a valve to draw ensures the closing of the bag not to put dust everywhere when handling. No loss of suction felt when the filter is full! The price remains correct For all these points I remain faithful to the vacuum cleaner "bagged".
