The Runner Short is perfect for running, squats, and leg day. Short shorts are in bro! 87% Nylon/13% Spandex blend provides comfort and freedom of movement. This fit is classic, but leans more towards the fitted side. For a more loose and relaxed fit, go up a size. If you have a thicker build in the thighs and glutes, you may need to go up a size or two for a comfortable fit. Short length for full range of motion. Lined with a breathable mesh made of the same nylon/spandex blend. Two zippered side pockets, perfect for keys while out on that run.