In May 2019, a class-action lawsuit
was filed against Slendertone for allegedly falsely advertising that using the Flex Belt (a belt that delivers small amounts of electricity into the body causing muscles to contract) will get rid of belly fat and contour the body, lead to visible “six pack” abs and weight loss, and is a replacement for traditional abdominal exercise when, according to the complaint, there is no scientific support for such claims and the FDA has disapproved such devices for the advertised uses. (Loomis et al v. Slendertone Distribution, Inc.
, Case No. 19-cv-854, S. D. CA.)