58%Rayon,42%Polyester. Smoke-free home. MATERIAL: This nightshirt is made with a soft and lightweight fabric, this oversized sleep shirt offers a loose and comfortable fit, reminiscent of a boyfriend-style shirt, ensuring a comfortable night's sleep. DESIGN: Long sleeve provides extra warmth and coverage on chilly nights, button-down design, perfect for a comfortable and convenient sleep experience, with its boyfriend style and loose fit, this sleep shirt is perfect for those who prefer a relaxed and oversized look, can be worn as sleepwear, loungewear, or even as a casual outfit for a night out. MULTIPURPOSE: This Ekouaer button down casual shirt can be worn as sleepwear, loungewear, or even as a casual outfit for a night out, not only is this sleep shirt great for bedtime, but it can also be used as a swimsuit cover-up or a beach cover-up, making it a versatile addition to your wardrobe. OCCASIONS: This slighly sheer and flowy shirt is suitable for various occasions - Whether you're looking for casual loungewear, lingerie, or a night out outfit, this sleep shirt is perfect. It is also suitable for maternity wear and can be worn for cruise vacations, resorts, intimate nights, boudoir shoots, photo shoots, concerts, and more.