The Moldex 8000 Half Mask Organic Vapor Respirator is 30% lighter than conventional dual-cartridge respirators – making it more comfortable to wear for longer hours. This complete, ready-to-use assembly includes: (1) Facepiece, (1) Wider strap for increased comfort and durability, (1) Set of organic vapor cartridges with N95 pre-filters (pesticides/paint spray), (2) Pre-filter retainers, (1) Instruction booklet, (1) Reusable storage bag. Available sizes: S (for very petite adults, children), M (fits 80% of population), L (people with large head/facial features). These are guidelines to assist with your sizing decision. There is no easy way to spell out the sizing on these respirators. Size medium will fit a majority of men and women. Once you receive your respirator, make sure it fits properly and passes fit testing requirements before using. NOTE: Replacement cartridges (Item #G8100M) and filters (Item #89N95) sold separately.