These vitrex premium sanding and loft insulation fold flat masks protect the lungs against fine non toxic particles and is ideal for laying insulation and sanding paint softwood brick plastic and plaster the breathe easy valve offers extra comfort when exerting greater physical effort the mask is ideal for working in confined positions and is pocket sized for easy and hygienic storage elasticated straps and adjustable nose clip ensure a secure and comfortable fit single use only en149200143 a1