India’s largest budget carrier, IndiGo, is the first airline to trial a feature that lets female passengers book seats next to other women to avoid sitting shoulder-to-shoulder with a man in a move designed to make flying more comfortable for female passengers, according to a CNBC report.

The airline’s booking process is fairly standard except for the seat map which highlights seats occupied by women with the color pink. This information is not visible to male passengers, according to the airline, CNBC reported. IndiGo did not immediately respond to CBS MoneyWatch’s request for comment on the new feature.