NCAA North Dakota Fighting Sioux MENS Sleepwear / Pajama Pants 100% authentic NCAA merchandise, satisfaction guaranteed. EXCELLENT FABRIC: 100% cotton; High quality machine washable material. Team logo embroidered on left leg for a sporty look. Two hand pockets for storage; Fabric covered elastic waistband with drawstrings for added comfort. Relaxed styling provides a comfortable and casual fit; Functional button fly for convenience.