【5-LAYERED FILTER】Breathable kn95 face masks are made of two layers of non-woven cloth, two layers of melt-blown fabric, one layer of hot air cotton. Inner skin-friendly layer absorb the moisture from the breath, 5-ply kn95 mask help facilitate easy, simple, and healthy breathing at all times. 【SNUG & COMFY】The 3D structure is designed according to the human face shape to ensure the tightness and safety. With stretchable ear loop and metal adjustable nose clip, a comfortable fit and reliable protection always.