Kettlebells are shaped like cannonballs that have a handle. They come in a variety of weights from 4kg to 56kg, but if you are a starter, it is recommended that men begin with the 16KG and women begin with the 8KG before moving onto heavier weights.
Kettlebells may be used to perform most exercises that typically utilize barbells or dumbbells, but offer even more variety because of their construction, which leads to improved strength, muscular endurance, tone, coordination and core strength.