Description Low profile ergonomic design with advanced filter technology reduces breathing resistance for more comfortable and less constricting feel, without compromising efficiency or effectiveness. Designed to fit comfortably under welding helmets with downward facing exhaust valve to reduce heat buildup and lens fogging. Provides 99.97% filtration of airborne particles and aerosols, both oil-based and non-oil-based. Extreme Low-Profile Mask Design Provides maximum field of vision and does not interfere with protective or prescription eyewear, making it an optimal solution for use with most welding helmets. Comfortable and Ergonomic Fit Allows users to feel more comfortable and less constricted without compromising the efficiency and effectiveness of the mask. Large Non-Return Exhaust Valve Reduces heat buildup and user fatigue allowing for the mask to be worn for longer periods of time. Minimal Dead Air Space Limits re-breathing exhaled air making user more comfortable. Convenient Turnbuckles Makes changing filters is quick and easy for the operator, reducing downtime.  Four-Point Head Strap Adjustments An integrated comfort cushion provides a customized and comfortable fit reducing fatigue for the operator.  Exclusive Pleated Filter Design This pleated design provides additional surface area to the filter making it easier to breathe while still keeping the filter size compact.  99.97% Filtration of Airborne Particles P100 Filters are strongly resistant to oil and provide filtration of airborne particulate including solid dust particles, metal fumes, and mists. Wrap-around spark guard protects filter media from sparks and other debris. Made with Medical-Grade Materials Ensures this respirator is free of latex and silicone; odor-free and non-allergenic. Replacement Filters: 294963 Included with Product LPR-100 Half Mask Respirator  2-P100 Filters Specifications  Click the image below to view full Spec Sheet Review Video