Warmer days are ahead, and this breezy pajama tank is sure to keep you cool while you snooze. Crafted from our exclusive Cool Nights® fabric that always feels cool against the skin, you're in for a great night's sleep even on the toastiest of nights. Build your dream pajama wardrobe with our Cool Nights® sleep separates. Details Sleep tank Sleeveless High crewneck 25" 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.