Athleisure apparel is becoming more and more popular in just about any casual environment these days. Soft, modern performance microfibers provide all the stretch needed when headed to the gym or taking your workouts outside. They also help to keep you cool and dry. They also perform beautifully as another great t-shirt from Peter Millar. All those performance-based benefits take on a new life when worn outside of the athletic milieu especially on warmer days.