Proprietary 4-Way Stretch and Wicking Fabric: Developed to provide the technical needs that are essential to high performance training; durability, exceptional 4-way stretch, breathability, moisture wicking and comfort * Compression Waist-Tightening System: The patent-pending waist-tightening system utilizes a small compression panel that secures around the butt when the front drawstrings are tightened. The result is a "loose look", but an incredibly secure and comfortable fit that is guaranteed to keep your shorts in place during the most strenuous of training regimens * External Pockets: Lay-flat hook and loop closure pockets are found on the left leg and right hip * Designed specifically to securely hold an iPhone, the right hip pocket is located at the optimal height for headphones to comfortably reach your ear