Midweight Performance Windbreaker The Indestructible Challenge Windbreaker thrives during your adventures through hell on a windy day (or a GORUCK Challenge), which end up at your favorite watering hole, none the worse for the wear. Complete with a streamlined hood (no dangling strings), off-shoulder seams, and a zippered chest pocket. Built out of the same tough as nails fabric as our Challenge Pants that has been tested and proven at the world&';s toughest endurance event.