What is so cool about this shirt? It has an 11% stretch.. huge amounts.. so it fits and it moves and it just finds all the right spots to make you feel super awesome. It's ultra light.. but ultra durable.. of course it has pockets, reflective accents and copious amounts of breathability. So bring on the heat and humidity of Hayward Wisconsin or Bentonville Arkansas. The Bella Vista will keep you cool going down the trail.