Tough, Technical Pants Ruck, train, hike, embrace the suck. Challenge Pants™ weigh next to nothing, dry lightning fast, and don't fail. Proven by tens of thousands of hard chargers all over the galaxy of suck. And you can drink a victory beer in them too, with confidence. Built with our proprietary super fast-drying, abrasion resistant, 2-way stretch ToughDry® fabric . Complete with cargo pockets, articulated knees, and a diamond gusset. You provide the weight, the miles, the work, and the DFQ (Don't F****** Quit) attitude.