Mens JOE BOXER Plaid Cotton Knit Thermal Sleepwear / Pajama Pants - Blue 100% cotton 100% authentic Joe Boxer merchandise - satisfaction guaranteed! Extremely high quality fabric: 100% cotton; Machine washable Fabric covered elastic waistband ensures a comfortably snug fit Functional button-fly and three pockets for convenience Legs are cut full and loose, relaxed styling provides a comfortable and casual fit