Soft and comfortable Silicone Material of Mask Strap Buckle will not cause any discomforts to your skin and the edges could not leave skin indentations.its non-slip can effectively prevent the mask loosing or falling off.
Black KN95 are comfortable and with 5-layers can still breath easily. This is our third order. Fit is also good. Shipped and received timely. Comfort in knowing we are not purchasing counterfeit ones.