Our unisex BlackMTN "Orange Coolio" shirt combines bright vibrant orange and electric blue stripes on a variety of different shirt colors.  We don't like to brag... too much, but we think this simple yet gnarly throwback can rival any t-shirt in your closet.  But not only does this shirt make sense in your closet it makes even better sense when wearing it on the trails.  Bright, visible, and lightweight makes it the perfect combination as a "Go-To" shirt when out exploring the unmapped. 
 
Here are the specs in case you are interested.
 
3.8 oz.(US) 6.7 oz.(CA), 50/25/25 polyester/airlume combed and ringspun cotton/rayon, 40 singles