Robust Design: Conforms well to most face shapes and sizes, Maintains its shape well during use, Collapse-resistant Relieves irritation: designed to offer relief from the irritation of low levels of specific gases and vapours, often present alongside particulate hazards Reliable, effective protection against fine particulates 3M Cool Flow Valve: Effective removal of heat build-up provides a cooler and more comfortable wear, Removes exhaled air and minimises the risk of misting eyewear Colour Coded Straps: Easy to recognise performance level by colour-coded straps - blue: FFP2 (APF 10)