Kettlebells! They sound heavy, and for good reason. These cast iron kettlebells with the embedded GladiatorFit logo are specifically designed for competitions. They are available in various weights from 8 kg to 32 kg and are also a very popular tool for athletes looking to shape and tone their bodies. Lifting and controlling a kettlebell forces the abdominal muscles to engage and can train every muscle in the body with just a few exercises. This seemingly ordinary object is actually a great ally for a complete workout, and in addition to its versatility, it is solid.