COMFORTABLE, BREATHABLE & REUSABLE: Our face mouth covering is made of organic premium quality mulberry silk (22 Momme), the highest quality fabric available, which is incredibly comfortable against the skin even wearing them for a long period of time. They could be worn under other masks to protect you from skin irritation or allergy. | FASHIONABLE AND ATTRACTIVE: The sheen of silk will draw attention from your peers and the fashionable design makes you stand out from your peers. The luxury masks could be nice accessories on wedding and parties. | INSERT POCKET AND PM 2.5 FILTERS: The mask has two silk layers. The insert pocket opening locates at the inner side of the mask and they are not visible when wearing. 4 free PM2.5 filters are included. The PM 2.5 filter will filter smoke, pollen and fine particles in the air to provide the maximum protection in heavy contaminated environment. | NOSE WIRE TO ENSURE BEST FIT: The metal nose wire could be used to make sure the mask fits the shape of your nose bridge closely and reduce the fog on your glasses. | ADJUSTABLE STRAPS: The straps are stretchable and the adjustment buckle could be used to tune the length of the strap to guarantee tight fitting. | SMALL SIZE: designed for smaller face or youth.