Compatible with Miele Guard L1 and Guard S1 vacuum cleaners Set contains four Miele HyClean Air TU vacuum cleaner dustbags and one Miele AirClean exhaust filter Advanced AirClean filtration system with hydrocharged dual inner layers captures 99.99% of fine dust, including 0.4µm particles, for a deep, thorough clean Patented ComfortFit system enables easy insertion of the dustbags, and includes a self-sealing collar that ensures the dust does not escape Made of 80% recycled materials to help minimize environmental impact Features a large capacity to reduce frequent bag changes Not suitable for any other series of Miele vacuums, including Classic C1, Compact C1, Compact C2, Complete C3, and Guard M1