Leinster became a professional outfit in the mid-1990s. The "Leinster Lions" name came into existence during the 2001–02 season as the result of a joint marketing initiative between Leinster Rugby and its kit sponsors, the Canterbury Clothing Company. Before the start of the 2004–05 season, the 'Lions' was dropped from the name. It is still used for marketing and branding, in particular, the Cubs Club for Junior members of Leinster Rugby. The Leinster mascot is "Leo the Lion". It was also during this time that the song “Molly Malone” became a match fixture to be sung by the fans.