SIZE - The Griswold Family Vacation Sleep Pants are available in mens sizes XS - 3XL. MATERIAL - The Mens National Lampoon Sleep Pants are made of a cotton and polyester blend. OFFICIALLY LICENSED - The National Lampoon Mens Apparel is officially licensed and 100% authentic. SOFT HAND PRINT - The Mens Griswold Family Vacation features a bright, bold, soft hand print graphic down the left leg of the pants. GREAT GIFT - The National Lampoon Mens Apparel is a great gift for any guy! Whether you're eating rubber or burning dust, take a load off and relax a bit in this pair of Men's Griswold Family Vacation Sleep Pants! The National Lampoon Christmas Vacation Sleep Pants are a pair of all black men's sleep pants made of a cotton and polyester blend. The Men's Sleep Pants features a bright, bold, soft hand print graphic down the left leg of the pants that reads "Burn Some Dust, Eat My Rubber." The Men's National Lampoon Sleep Pants are available in men's sizes XS - 3XL and is the perfect Griswold Family Vacation Men's Apparel for any guy!