Stretch out and enjoy lightweight luxury in our exclusive cool nightsâ® pajamas. These shorts are your soft, stretchy, slip-on solution to sleepless nights. Detailspockets4 inseamelastic waistbandslip-on stylecool nightsâ® fabric is made with lightweight rayon fibers that stay cool to the touch and keep the fabric from sticking to your body. 93% rayon, 7% spandex. Machine wash. Imported.