The vitrex premium multipurpose valved fold flat masks have a pocket sized fold flat design for easy and hygienic storage breathe easy valve offers extra comfort when exerting greater physical effortbody movement ideal for working in confined positions ie when crouching or bending protects lungs against very fine toxic particles and from fumes when welding and removing paint ideal for use with mdf hardwoods fibreglass insulation and most power tools en149200143 a12009 ffp3 nr