The inventiondisclosesanalloycoatingbushing whichcomprises a steelbackinglayer, a substratelayer, a nickelgridlayerand a friction-reducing layer which are sequentially arranged.
Mizuno reckons that by reducingfriction, keeping the flow orderly and delaying separation of the boundary layer, its new suits offer the average female swimmer 9.5% less drag than a conventional costume.