The Channar Lahala or Channar revolt, also called Maru Marakkal Samaram, refers to the fight from 1813 to 1859 of Nadar climber women in Travancore kingdom for the right to wear upper-body clothes to cover their breasts. This right was previously reserved for Nair women, who were higher-class Hindu women.
In 19th century Travancore lower-class women were not allowed to wear clothes that covered their breasts. Baring of chest to higher status was considered a sign of respect, by both males and females. Higher-class women covered both breasts and shoulders, whereas Nadar climber women were not allowed to cover their bosoms, as most of the non-Brahmin women, to punctuate their low status. Uneasy with their social status, a large number of Nadar climbers embraced Christianity, and started to wear "long cloths," at the request of the missionaries. When conversion further spread, the Nadar women started to wear the Nair breast cloth.