Category 2 mask / AFNOR model / 100% organic cotton fabric 160g / m2 / 37 threads / cm x 27 picks / cm. Material validated by the DGA. Filtration efficiency of 3μm particles: 83.4%. Air permeability test: 331 L.m2.S-1 for a depression of 100 pa. Nasal bar. Wash for 30 min at 60 ° C. Tested 20 washes. The seams are made in a workshop in India in collaboration with the NGO SSMI which works for the emancipation of Indian women. The assemblies and heat-sealing are carried out in France.