- Item Name - Headgear
- Type - Single Crown
- Series - Sentinel
- Material - ABS
- Includes - Easy-to-Grip Knob, Crown Protector
- Suitable For Use With - 840MX2 Acetate, 840PX2 Polycarbonate, 840TX2 Tritan™ Visors
- Color - Black
- Headstrap Type - Ratchet
- Exhalation Valve -
- Nuisance Removal -