BRAND NEW STILL SEALED IN BOX Take charge of your pelvic floor with expert-designed care from home. Pelvic floor trainer and app. Using biofeedback, the gold standard of Kegel training, Elvie Trainer helps you visualise your pelvic floor while guiding you through each exercise. Simply insert Elvie Trainer and connect to the app. As you squeeze your pelvic floor muscles, your contractions move the gem through a targeted workout.