Material: cotton+activated carbon fiber, easy to breathe.
Size: unisex adult size,fits most people and portable.
Design: washable mask with replaceable filter pads and adjustable, elastic drawstring, easy to use.
Function:suitable for walking,running, cycling, hiking, skiing and other outdoor activities,it also can be used haze day protection, anti dust pollen pollution and so on.
Replaceable: carbon filter is easy to install and replaceable, offer cleaner air to protect your mouth, nose and lung.