New Zealand were not convincing in the pool stages, edging to wins over Canada, Georgia and the United States. In the latter match they were down 19-5 until midway through the second half before winning 26-19.
Most of their earlier errors were eradicated against Wales although they were penalised at the breakdown. New Zealand also showed variety at first-receiver to keep Wales guessing; they also switched direction at will.
The NZ women's side continued their dominance, beating England 24-7 in the quarter-finals.
Their "rubber band theory" game plan was simple but effective, as it has been all tournament: exhaust the opposition by playing width and stretching it across the field - then ping through the gaps.
Wings Honey Hireme and Portia Woodman were helped by clinical play-making from captain Huriana Manuel, Kelly Brazier and Kayla McAlister.
Of the starting seven, Linda Itunu delivered bruising tackles and Sarah Goss was abrasive, especially barging through a lineout on the English line to touch down a loose ball.
New Zealand played largely error-free. Conceding a scrum tighthead and allowing Heather Fisher the room for a 60m solo try were at the top of a slim rap sheet.
Andrew Alderson travelled to Moscow courtesy of New Zealand Rugby.
