Only all-condition autumn winter fabric has water-resistant finish Get the Perfect Fit: Size Down One for a Muscle Look Our model normally wears a medium for a relaxed jogger fit. But for a sharper, muscle-hugging look in this outfit, he sized down to a small. If you want a looser, casual fit, order your normal size. For a lean, sculpted silhouette that shows off your physique, we recommend sizing down one size. This jogger is designed for versatility - wear it loose for laidback comfort or fitted for an athletic, body-conscious statement. Find your ideal look by choosing a size down for a muscle fit.