A pith helmet was a headgear used to protect from the sunlight on tropical parts such as Africa and southern Asia.[source needed]
Clara Oswald wore a pith helmet when exploring a jungle planet. (COMIC: Four Doctors)
A pith helmet was kept in the wardrobe when the Tenth Doctor chose his outfit. (TV: The Christmas Invasion)
Iris Wildthyme wore a pith helmet and goggles when she, Panda, Simon, and Barbra first ventured out into the jungle on Valcea. (PROSE: Enter Wildthyme)
Godsacre and his soldiers wore pith helmets during their encounter with the Twelfth Doctor, Bill Potts and the Ice Warriors. (TV: Empress of Mars)
K9 Mark III wore a pith helmet in Egypt. (COMIC: City of Devils)
The Fourth Doctor claimed a pith helmet would come in handy should he ever visit Chloris again. (TV: The Creature from the Pit)
Captain Cook, an intergalactic explorer, wore a pith helmet. (TV: The Greatest Show in the Galaxy)
Some pith helmets were on the train coach carrying Jack Harkness and his soldiers. (TV: Small Worlds)