Sirius is just that....built for the serious angler that expects comfort, style, and a tech t shirt that can perform on the water. At first glance, the sharp check pattern looks like a modern woven that you would wear at the bar, but upon further inspection Sirius is packed with highly technical features that set itself apart. Built on yarn-dyed 100% lightweight polyester, Sirius features dual front chest pockets with snap closure, vertical rear venting, bi-swing construction, articulated shoulders, soft microfiber lense cleaner, AFGUARD stain release, and AFBLOCK UPF 50 sun protection. Get Sirius.