This Niosh N95 face mask is made of quality, safe, soft and comfortable material, it comes with up to 95% filtration by covering the mouth and nose. Adjustable nose clip embedded and elastic ear loop to fit most people. Convenient ear loop design allows you to slip on and remove your mask quickly and easily. This mask should be replaced regularly, and long term used is not recommended, it is suggested to stop using it if there is any difficulty breathing, or adverse reactions during the process of use. This mask is not washable, please ensure that it is used within the valid period. Store in a dry, ventilated place and stay away from fire and flammable materials.