NOTE: 1.Dear customer, welcome to my shop. In order to get the package delivered to you as quickly as possible, we have selected the best logistics provider to carry your parcel, so the postage will be a bit expensive, but it is worth it ,wish you a happy life! 2.The mixed styles in a selling packing happens sometime(but all the masks have the same functions and similar structures),thanks for your kind understanding. Description: 1.Disposable KN95 masks, Breathable,anti dust,sanitary and convenient for using. 2.The inner layer of activated carbon can filter harmful gases or odors.95% filtration, a 360-degree three dimensional breathing space，provide anti-dust protection for you. 3.Made of high quality material, safe, soft and comfortable，reduce skin irritation. 4.High elastic rubber band, absorb sweat and not tight 5.With a concealed plastic nose, anti fog, built in hidden cartilage bridge, can be adjusted to avoid voids and reduce the inhalation of harmful substances. 6.Folding thin section, lightweight and easy to use Specifications: Instructions: Cover the nose and mouth and hang the ear straps on both sides of the mask on the ear;Fix the bridge of the nose in a nose to prevent dirty air from entering;Pull the mask to the lower jaw to create a three-dimensional breathing space. Best Wear time is 8 hours Package Included: According to the quantity of your order： 20*KN95 Mask W/Exhalation Valve; 50* KN95 Mask W/Exhalation Valve; 100* KN95 Mask W/Exhalation Valve.