Over 20 million Cool Nights® PJs sold. Get your beauty rest in a gorgeous chemise with a soft lace trim. Details Lace V-neck + back Adjustable straps 36" on body 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.