A STYLESEAL instructional video set in a Bangkok park that provides a good example of the application of the patent-pending SMART VALVE from STYLESEAL. Where to use it, when to OPEN the valve so you are more comfortable and healthy, and when to CLOSE it to protect others in case you are sick. SMART VAVLE allows the best of both, health and comfort while wearing the mask while still being courteous to others so they can be safe.
