A comfortable mask with 3D cut, chin contour , adjustable ear loop , headband and nose clip ;
Outer layer : 100% cotton fabric ;
Middle layer : Build-In nano film provides real protection with ≥95% filtration efficiency ;
Inside layer : 100% cotton antibacterial lining from Dupont Silvadur technology;
Washing instruction: https://3smask.com/g_q/ In how to “How to take care of the 3S Mask” section.