These are OFFICIALLY LICENSED Cookie Monster lounge pants! Features an allover design of the characters, Bert and Ernie, from Sesame Street with the saying Mad Bro? As usual, Bert is the one with the disgruntled look while Ernie is smiling away! These Sesame Street adult lounge pants are extremely high-quality with a new fabric blend style. It is made of a wonderful 92% polyester / 8% spandex fabric blend and has a drawstring waist closure.