The Warwick Rowers are baring (almost) all once again for a steamy calendar they hope will further the worldwide social movement they launched nearly a decade ago.

The 2018 edition sees the Rowers, who are students at the University of Warwick in England, posing au naturel on the grounds of regal-looking estates in Spain and the U.K. The guys began stripping nude for the project in 2009 to raise funds for rowing gear, and though their earliest efforts were considerably less cheeky, their calendar quickly found an audience among gay men. (Watch a video trailer for the new calendar above.)

Once the Rowers caught on to who their most fervent admirers were, they opted to re-conceive their mission. Since 2012, proceeds from calendar sales have been donated to Sport Allies , a U.K. advocacy organization aimed at combating homophobia and gender bias in team sports. Recent editions of the calendar have raised more than $300,000 and are sold in 77 countries.