![Skaters from the Stockholm Roller Derby work out during a practice session before their women's flat track roller derby bout against the Kallio Rolling Rainbow in Huddinge June 9, 2011. Flat track roller derby consists of two teams of five players each and ... Skaters from the Stockholm Roller Derby work out during a practice session before their women's flat track roller derby bout against the Kallio Rolling Rainbow in Huddinge June 9, 2011. Flat track roller derby consists of two teams of five players each and ...](https://c8.alamy.com/zooms/6/ef01e7a28176469f8963b75bc7dda7ae/2e6e67x.jpg)
Skaters from the Stockholm Roller Derby work out during a practice session before their women's flat track roller derby bout against the Kallio Rolling Rainbow in Huddinge June 9, 2011. Flat track roller derby consists of two teams of five players each and ...
![File:Happy Boutday – Stockholm Roller Derby vs Helsinki Roller Derby (7197554898).jpg - Wikimedia Commons File:Happy Boutday – Stockholm Roller Derby vs Helsinki Roller Derby (7197554898).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/2/27/Happy_Boutday_%E2%80%93_Stockholm_Roller_Derby_vs_Helsinki_Roller_Derby_%287197554898%29.jpg/800px-Happy_Boutday_%E2%80%93_Stockholm_Roller_Derby_vs_Helsinki_Roller_Derby_%287197554898%29.jpg)
File:Happy Boutday – Stockholm Roller Derby vs Helsinki Roller Derby (7197554898).jpg - Wikimedia Commons
![A skater from the Stockholm Roller Derby (L) battles a player from the Kallio Rolling Rainbow during their women's flat track roller derby bout in Huddinge June 11, 2011. Flat track roller A skater from the Stockholm Roller Derby (L) battles a player from the Kallio Rolling Rainbow during their women's flat track roller derby bout in Huddinge June 11, 2011. Flat track roller](https://c8.alamy.com/comp/2D04RC3/a-skater-from-the-stockholm-roller-derby-l-battles-a-player-from-the-kallio-rolling-rainbow-during-their-womens-flat-track-roller-derby-bout-in-huddinge-june-11-2011-flat-track-roller-derby-consists-of-two-teams-of-five-players-each-and-points-are-scored-when-the-assigned-scorer-or-jammer-laps-member-of-the-opposing-team-reutersbob-strong-sweden-tags-sport-society-2D04RC3.jpg)