OPEN 3C DE-SEINE-ET-MARNE is a W60 international women's tournament that will take place March 26 to April 1 2023 in Croissy-Beaubourg, near Paris and attracting highly ranked players. During the week of the tournament, a number of actions take place with particular attention to women's practice as well as various conferences and events on corporate social responsibility. The tournament was awarded the prize for the best tournament by ProElle.