(100) ProTeam Sierra, Lil Hummer Micro-Lined Commercial Backpack Bags, 100 Bags. 100 Premium Micro-Lined Commercial Vacuum Bags for ProTeam Sierra, ProTeam Lil Hummer II, Hawk Breeze, and Speedster 600 Backpack 100% Premium Allergen Filtration of All Airborne Allergens Including Dust, Pollen, Mold Spores, Allergens, and Dust Mite Debris. Ideal for Schools, Office Buildings, Libraries, or Homes with Dust and Allergen Sensitivites. Replaces Pro-Team OEM Part Number 103227, Hawk Breeze Part 00015169, and Envirocare part ECC168 Rubber Gasket Around Opening Seals Dust and Debris From Escaping Dimensions of bags are: 2" Hole Diameter 12  " x 6" Bag Size 6  " x 4  " Cardboard