Genuine Simplicity Type Z HEPA Vacuum BagsWill fit Simplicity compact and sub-compact canister models:Snap Jack and Jack 1 Jill and Jill 1Also fits the Riccar compact and sub-compact canister vacuums:Moonlight Moon 1 Riccar SunburstHiFlow HEPA vacuum bagsHEPA Filtration 99.97% Efficiency at 0.3 MicronsCheaper generic bags allow much larger particles to escape through the bagDrastically reduces the amount of dust expelled when vacuuming6 bags per pack