A California woman named Bistra Pashamova is the latest American consumer to file a suit related to toning shoes, this time against New Balance, which says it will vigorously defend itself. In the papers filed by her attorney, Pashamova says that she was injured by the company's True Balance toning shoes; She also claims that the company promises benefits that she did not receive, and that New Balance profited from those promises. The suit is seeking class action status, and Pashamova wants her money back for the shoes and for more than $5 million in damages for her and others. She wants New Balance to stop making the claims that the shoes activate muscles and burn additional calories. Among other things, the action complains that New Balance's claims were based on an internal study that was not subjected to third-party scrutiny and did not include double-blind studies administered by a neutral party. It cites other studies, such as the American Council on Exercise, which claim that toning shoes produce no measurable difference in muscle activation or calorie burning. It also cites several medical authorities who believe toning shoes can cause injury and cites New Balance for failing to disclose this information.