Vortex Optics Logo Hat Charcoal OSFA. Designed for everyday wear but built for adventure, these are clothes that work as hard as you do. And because you can't spend every moment in the field, our gear looks just as good in the office and out on the town as it does at competitions or scouting bull elk. Put your Vortex Nation pride on display with a snap back cap featuring mesh panels to keep you cool.