I am a triathlete not a swimmer and this suit feel great. I shaved off a minute of my Olympic distance swim. It feel like 2nd skin. did not over heat during the swim.
Indeed, no suit with sleeves has been approved by FINA, and this suit is not on their approved suit list for 2009.
if you remember Ian Thorpe, wore a full body suit with slieves, so yes this IS approved by fina.....until August 2, 2009. Not that great of a suit, the LZR is much better