Mens Joe Boxer Polyester Thermal Sleepwear / Pajama Pants - Blue & White 100% polyester 100% authentic Joe Boxer merchandise....Very high quality mens sleepwear - satisfaction guaranteed! Extremely high quality fabric: 100% polyester ; Machine washable Two on-seam hand pockets for convenience; Fabric covered elastic waistband with drawstring ensures a comfortably snug fit. Legs are cut full and loose, relaxed styling provides a comfortable and casual fit You will own and wear this exquisite & comfortable sleepwear for a very long time!