3D Fold KN95 Valve Face Mask has artificial designed valve, which helps easier breathing while wearing. The proposed mask is the best suitable for clinical and personal usage due to its >95% bacterial filtration efficiency. Certified by CE/TUV, the mask meets standard like EN149/GB2626 as it is made out of superior non-woven fabric, hot air cotton, and melt-blown filter with approved technology. Moreover, 3D Fold KN95 Valve Face Mask is absolutely skin-friendly, and comes in several sizes and colors with safe packaging.