We offer 3 types of dust masks, and 2 respirators which filter out both dust, paint and vapors. The less expensive mask (160#) has one rubber band, the premium mask (160#PREM) has two bands and a foam gasket around the edges. The Ultimate dust mask have 2 bands, foam gasket and an exhaling valve. They all have flexible metal nose strip that adjusts to the contours of your face. Both the Gerson® 8000 and the 3M half mask respirators are NIOSH approved for organic vapors such as paint fumes. The Gerson which is disposable after many hours of use has replacement pre-filters. The 3M has replacement cartriges which twist on.