Chinese balls, intelligent vibrators, fitballs, and vaginal cones are materials that can be used for Kegel exercises. Chinese balls have become a valuable therapeutic device for correcting and preventing pelvic floor muscle problems. Intelligent vibrators evaluate muscular contraction capacity with 5 levels to allow controlling progress. Fitballs help improve stability and correct body posture. Vaginal cones are stainless steel devices covered in plastic that are inserted in the vagina vertically to improve pelvic muscle strength and stability.