These are Officially Licensed Star Trek Pajama pants! Space: the final frontier is the voyages of the starship Enterprise. Its mission: to explore strange new worlds, to seek out new life and civilizations, to boldly go where no man has gone before! These Star Trek lounge pants feature a wonderful allover pattern of the 3 Insignias most famous from Star Trek TOS. The command badge, the Science Officer badge, and the Engineering Badge. They are listed in regular men's sizing. The Model in the photos is 6 foot 2 and is wearing a size medium. Please See Size Chart for the exact measurements.