Stay comfortable from top to bottom in our Details Cool Nights® fabric is made with lightweight rayon fibers that stay cool to the touch and keep the fabric from sticking to your body. V-neck. Short sleeves. Pockets Drawstring waist. Pants have 30" inseam. 93% rayon, 7% spandex. Machine wash. Imported. Soma Intimates exclusive Cool Nights® pajama set. The classic short-sleeve sleep tee and pajama pants design is made with our special Cool Nights® fabric that's super soft and is cool to the touch, making these pajamas supremely comfy for sleeping and lounging.