Over 20 million Cool Nights® PJs sold. Our lace cami—with just the right amount of support built right in—puts the beauty in beauty sleep. Details Lace V-neck + back Soft support throughout bust Adjustable straps 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.