This is not comfortable with a butterfly style wheel intended to move only an inch or so in either direction.

FORBES: SP: Why Cadillac?

This is the era of the butterfly style, in which a goalie drops to the ice, fans out his legs, and does his best to let shots hit him.

WSJ: Don't Tell Martin Brodeur It's His Swan Song

He was a late bloomer, becoming Boston's starter at age 31, and rather than employ more traditional goaltending techniques (the butterfly style, for instance), Thomas relied on his athleticism and aggressiveness to make saves, using whatever body part happened to be handy to stop the puck.

WSJ: The NHL's Most Mysterious Man