50PCS KN-95 Personal Protection Against | Dusts | Allergens | Fog Haze | Splattering Liquids | Anti-Odor 4 layers of protection and efficient filtering Two layers of non-woven fabric, two layers of meltblown fabric. Made of reusable activated carbon made of cotton ensures that your skin stays fresh. COMFORTABLE TO WEAR. High-quality elastic earband makes it quite easy to wear and comfortable for long periods of wearing. MULTI LAYER PROTECTION. The outer layer blocks large particles. Meltblown cloth layer blocks more than 94% particle attachments. Structural Layer builds a 3D space for non-contacts between your mouth and the respirator. The inner layer with soft materials contacts your face for comfortable using experience. Foldable, 3D and light weight design.Anti-dust protection mouth mask for sports, running, hiking, climbing and for many other purposes.Buy KN95 Disposable Mask website:http://www.mask-trade.com/mask/kn95-disposable-mask/