We have been frequently asked that question.
John Leonard, Executive Director of the World Swimming Coaches Association and the American Swimming Coaches Association, answered in a concise and accurate manner. John was one of three coaching representatives, along with Alan Thompson, National Team Director for Australia, and Osvaldo Arsenio of Argentina, Coaches Commission Chair, who attended key FINA meetings on this issue.
"Technical swimsuits are the enlarged coverage suits that have come on the market since November of 2007. They all have either enhanced materials, buoyancy issues or compression issues, beyond what was available on the market prior to that time."