Born in 1977, Underoos brought the idea of becoming who you want to be into real life. Boys and Girls everywhere became their favorite character for the day. Today we are introducing Underoos for everyone! Anyone, at any age, can become their favorite character, icon or superhero...actual superhero powers not included. Collect them all and be who you want to be! 100% cotton top, 95% cotton/5% spandex bottom. Standard men's sizes.