effective and comfortable protection against organic gases, vapors and particles, improved exhalation valve reduces breathing resistance during exhalation, reduces heat and moisture build-up and thus makes breathing easier, especially in hot and humid working environments, lightweight, well-balanced design with a flat profile, the integrated filter elements provide you with a complete mask that is ready to use and maintenance-free, soft, skin-friendly, silicone-free face seal, comfortable straps with adjustable head support and easy-to-fasten neck strap