Black with Blue core. 40mm contact patch. Same shape as the Blue 70mm with slightly harder urethane. These wheels are even quicker to release, and 100% controllable going sideways. These are aimed straight at freeriding and sliding, and they will elicit longer, icy smooth slides when compared to the 78a formula. The 82a, 70mm Swift is Bustin's ultimate freeride wheel and is the wheel of choice for many of the Bustin team riders.