Adjustable Elastic Ear Loop :Kids KN95 face mask length of the ear loop is 4.52 inches, and the stretched length is 6.29 inches. With two silicone anti slip cord buckle, children can easily to adjust the length of the mask ear cord to suit their face. | Anti Fall Design :Due to the design of flexible metal nose clip, Kids never need to worry about the kids KN95 mask falling off. The extra sponge on the nose clip not only protects your children' delicate skin but also provides overall protection, as well as prevent fogging for children who wear glasses. | Filter Efficiency=95% :These Black kids disposable face masks are made of two layers of non-woven cloth, two layers of melt-blown fabric, one layer of hot air cotton. The filter efficiency is 95% | Qualified Manufacture :Chengde Technology Co. KN95 face mask made in China (not is USA). | Disclaimer :This KN95 mask is NOT an N95 mask. For more information about KN95 masks please see the following before you purchase: amazon.com/AboutKN95s.