Hall of Fame quarterback Joe Montana said they improved his strength and posture. Celebrity Kim Kardashian boasted they allowed her to ditch her personal trainer. But federal and state officials said the rocker-bottom Shape-ups and other toning shoes made by Skechers USA Inc. don’t live up to the hype from the company and its high-profile endorsers.

On Wednesday, the Manhattan Beach company agreed to pay $50 million to settle false-advertising allegations by the Federal Trade Commission and the attorneys general of 44 states, including California, as well as the District of Columbia.

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