Riccar 2000 & 4000 Upright Vacuum Cleaner Bags. These bags are Genuine Riccar upright bags. The bags come 12 in a package. An antibacterial liner captures microscopic particles, germs, bacteria, pollen, spores, dust mites and allergens as small as 0.1 microns. Advanced 2 ply melt blown bags with electrostatically charged liner. Ecopure vacuum bags are 6 times better than standard vacuum bags giving them 99.7% filtration. All bags are electrostatically charged and have an advanced 2-ply meltblown micro liner for efficient filtration.