Officially licensed NASA merchandise. Perfect for space enthusiasts dreaming of space and Mars exploration, space ships and junior astronauts wanting to visit space, the solar system, moon or Occupy Mars. If you love rocketry and science is your spirit, astronomy your hobby, teachers and students will love this NASA design and follow the events of probes landing on Mars. Let's get insight on Mars! 8.5 oz, Classic fit, Twill-taped neck