The Dyson Animal Stowaway DC20 offers powerful all-round pet hair removal, ideal for cat and dog owners. The DC20 Animal has all the advantages of the DC20 Allergy.Featuring Root Cyclone™ technology - Patented Dyson technology. Doesn't clog so it doesn't lose suction. Dyson has developed a unique system that does not rely on filters or bags to separate dirt from air. Instead it uses powerful centrifugal force to spin the dirt out of the air, so there’s no clogging and no loss of suction,Doesn't lose suction,Doesn't clutter when stored.