Over 20 million Cool Nights® PJs sold. With a peek of lace, these ultra-soft shorts will spice up your PJ collection. Details Soft, elastic waistband Hidden side pockets 4" inseam Cool Nights® 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 cold.