NWT Jcrew Short-sleeve pajama pant set in tissue crepe navy medium From website Something about a matching pj set always makes us sleep better. - This one's crafted in our tissue crepe—a softer, lighter take on the customer-favorite fabric—knit from 100 percent cotton, so you can rest even easier. 100% cotton. Machine wash. Top body length: 21 1/2"; 29 1/2" pant inseam.