Check out wearable air purifiers for men and ensure that you breathe the purest fresh air at the bare minimum cost. Graham Zimmerman, Quinn Mason, Megan Banker, etc., are proud brand ambassadors of the fashion brand Outdoor Research. Outdoor Research is a reputed name in the US for its agglomeration of top-class mountaineering and sporting apparel. Many popular shades of gray are smoke gray, ash gray, charcoal gray, etc.