Brooks Carbonite 5” 2-in-1 shorts are perfect for staying cool in warm weather and shining bright when the lights are low. The semi-fitted shorts have 3M™ Scotchlite™ Carbon Black Stretch reflectivity in critical motion zones that helps drivers recognize you as a runner in motion. These shorts have a supportive sweat-wicking boxer brief liner that feels smooth and stays in place without chafing. There is convenient storage in the drop-in side pockets and a drop-in liner pocket to hold your keys, money, gels or other essentials while working out. It also has a key loop so that your key is secure.