The material and construction seem very good. The fabric is light and breathable (and not overly shiny as some synthetics are). The design is functional, and I like the style.

The only criticism stopping me from buying several more pairs is that it's a little tight in the chest. The fit is otherwise as expected for a large, and every other aspect of the sizing is good, including the width of the shoulders (I'm 6'2'', medium build). However, when I reach my arms forward, there's a distinct constriction in the back/underarm area. Trying a size up might help, but I'm concerned it would be too baggy elsewhere. Also, the sleeves become a bit tight around the biceps when rolled up. My biceps are not particularly large, so those with larger arms may have a problem.