The 7700 Series is the most comfortable and durable half mask available. Its soft non-allergenic silicone seal provides excellent protection, comfort and fit. The half mask cradle suspension system allows the face piece to seal evenly on the face without creating pressure points. Its low profile gives workers a wide field of vision and does not interfere with protective eyewear. The low inhalation and exhalation resistance of the 7700 Series makes breathing easier to reduce worker fatigue. Silicone face piece material conforms to facial features and doesn’t harden with age. Silicone is easy to clean, extremely durable and resists distortion ensuring a better fit, time after time. Contoured sealing flange and cradle suspension system eliminates discomfort caused by pressure points on facial nerves. Design of nose area provides excellent comfort and fit. Minimal dead air space improves worker comfort by limiting re-breathing of exhaled air. Direct cartridge to face piece seal minimizes replacement parts and simplifies maintenance. Three overlapping sizes will comfortably fit most users.North 7700 Series Half Masks are compatible with all North cartridges, filters and accessories.