Rating: 5 / 5
Check out travelcountry.com for the eco-mesh shirt. They have free shipping whereas Railriders charges a pretty hefty fee. I've been using this shirt for years and consider it the best Sierra shirt I've ever come across. Great venting and breathability, dries quickly, light, and good sun protection.
The only difference between the eco-mesh and adventure shirt is velcro vs buttons on neck and sleeves. Both have a chest pocket velcro closure tab.