You'll love the cool, comfy feel of our Cool Nights® tank sleepshirt, designed using our Cool Nights® fabric that stays cool to the touch. The sleeveless, scoopneck styling is perfect for warm nights, helping to keep you comfortable for a great night's sleep.DetailsCool Nights® fabric is made with lightweight rayon fibers that stay cool to the touch and keep the fabric from sticking to your body.Scoop neck.Sleeveless.36 from shoulder.93% rayon, 7% spandex. Machine wash. Imported. Mix and match pajama pants, shorts, and tops or shop our #1 Cool Nights® pajama sets—a perfect gift for women.