Exclusive design and shape: semi-rigid mask, designed to stay maintained in time. Upper part pre-formed (no nose-bridge)for a quick and easy adjustment, highly efficient and secure. Great inner volume to avoid any oppression on face and to ease communications. Ultra-soft inner veil to offer a soft and pleasant contact to the skin and improve the breathing comfort. Twin supple and resistant elastics, stapled on ear tabs to avoid any risk of irritation and of leakage in the filtering area. Ultra-light(8g) to minimize wearer fatigue and increase acceptance in time. No latex, no silicone, no PVC Viral Filtration Efficiency > 99,9%.