Material: Made of cotton blend and polyester, the men's thermal unionsuit full jumpsuit pajamas is very soft and comfortable, twill knitted texture with certain thermal and breathability, to provide you perfectly gentle wearing experience. Design: Solid Color Printed Jumpsuit / Button Up Sleepshirt Onesie Pajamas /Slim Fit Skinny Bodysuit Romper One Piece Sleepsuit / Crewneck and Ribbed Cuff. This men's onesie jumpsuit pajamas is upgrade to a full coverage one piece romper from shirt, Which is very fashion, stylish, novelty and funny, unique. It is warm and soft, the fitted model can allow you match it with various coat. Occasion: This adult onesie knitted jumpsuit sleepwear can be dressed as a thermal underwear, with various outwear coat/jacket and pants or coverall outfit to keep warm outdoor in Winter or just as single housewear/loungewear indoor in Spring, Fall and Winter.