18 MICROFILTRATION VACUUM BAGS DESIGNED TO FIT SIMPLICITY TYPE J (INCLUDING S12) VACUUMS. ALSO FITS RICCAR SL+ CANISTER VACUUMS. THIS LISTING IS FOR 3 PACKS EACH WITH 6 BAGS. THESE BAGS ARE THE BEST QUALITY REPLACEMENT MICROFILTRATION BAGS AVAILABLE. MICRO BAGS HAVE 99.7% FILTRATION AND ARE A MUST FOR ANY ALLERGY SUFFERER BUT AT THIS PRICE EVERYONE SHOULD USE THEM.