Rigid shell:shape maintained even in moistened and heavy loading environments. Ultra-soft hypoallergenic Willtech™ flange seal with absorption properties and a tight sealing film for an exceptional comfort and a perfect fit. Preformed and coloured nosebridge to save time to perfectly adjust the mask and to instantly identify its protection level. Large internal volume to easily communicate and breathe. Shielded exhalation valve with an exclusive design for an improved protection. Adjustable braids to easily and efficiently fit the mask. Lightweight respirators (29g) to reduce wearers'fatigue. No latex, no silicone, no PVC. Dolomite tested. ATEX-certified, it can be used in surface industries to protect against dust atmospheres in the hazarous areas 20, 21 and 22 and against gas atmospheres for group IIA & IIB groups in the hazardous areas O, 1 and 2. In mine industries, it can be used for any type of extractions and any depth. Exist in 2 sizes (Medium-Large M/L and Extra-Large XL) to offer a better fit and protection to users.