The TekCheck is available in new colorways - as well as in a Long Sleeve and a Ladies' version. This versatile TekCheck Shirt puts added flex in your days, as it is made using MicorFiber with Mechanical Stretch to give you freer range of motion at work or at play. Though we've updated the colors and expanded the style selection, one thing you can count on is these shirts offering the same great styling as our top-selling MicroFibers - vertical venting with mesh lining at chest and back, UPF 30+ protection and a printed inner label.