Mens Stafford Luxurious Thermal Sleepwear Pajama Pants - Navy Blue 100% authentic Stafford merchandise - satisfaction guaranteed! Extremely high quality fabric: 100% thermal polyester; Machine washable Fabric covered elastic waistband with drawstring ensures a comfortably snug fit Functional button-fly and two front slash pockets for convenience Legs are cut full and loose, relaxed styling provides a comfortable and casual fit