Style 9226 Semi-fitted Breathable, 100% cotton ribbed knit fabric feels great against your skin Stay-tucked length helps keep you covered Sleeve-less design provides greater mobility and breathability The Jockey 100% Cotton A-Shirt Tank is an essential first layer under sweaters, flannels and dress shirts. Or, wear it alone for cool, comfortable sleeping. Pure cotton rib knit features StayNew technology that fights pilling and fading to help keep it looking new, wash after wash, and moisture-wicking Staycool technology that helps you feel cooler and drier.