Protect yourself from a variety of gas, vapor and particulate hazards. Full facepiece features a large, clear lens, giving you a wide field of vision and excellent overall visibility. Unique center adapter directs exhaled breath downward, effectively reducing liquid and debris buildup. Cool Flow? valve helps keep you cool and comfortable. Multifunctional design provides three settings: air purifying respirator (APR), supplied air respirator (SA) and powered air purifying respirator (PAPR). Respirator Type: Mask; Material(s): Silicone/Thermoplastic Elastomer; Valved: Yes; Size: Medium.