KEEP THE COLD AND BUGS OFF OF YOUR FACE .This Sports Utility Mask (SUM) was designed out of necessity! For years have had the same problem you experience, (i.e. runny nose, watery eyes, sand blasting, bugs in your teeth, wind howling in your ears, frigid teeth, etc..) when enjoying your favorite sport activity (Snow Boarding/Skiing, Fishing, riding in your Sand Rail, Motorcycle/ATV, etc..). So we decided to do something about it! That's why we've designed, engineered and made the WORLDS 1st and ONLY SUM for sport enthusiasts around the world. This SUM is almost perfect they way it is, but we know some of you may need/want some ventilation so your eye glasses don't fog up, so that's why we've designed this SUM to allow you to either close the ventilation or not and customize it however you want.ACRYLIC LENS INCLUDED.