This is an Star Trek pajama pant! Space: The Final Frontier! Over the years, Star Trek has intrigued fans worldwide, from the early years of Star Trek The Original Series, the popular Star Trek The Next Generation, Star Trek Voyager, Star Trek: Deep Space Nine, to the newest installment Star Trek Discovery. The Klingons are a species on Star Trek known for their prideful ruthlessness and brutality. Worf is the Klingon on the Next Generation. These pants have an awesome design of the Klingon battle, the Bat'leth, a double-sided. The Klingon script alludes to the famous battle saying of the Klingons, "Today is a good day to die." This design runs up the left pant leg. The pants feature a button fly, elastic stretch waistband, and 2 hand-deep pockets! Gift for fans of the classic Star Trek TV series!! These are the best!