For functional fitness: Kettlebell set from Gorilla Sports. The kettlebell is one of the most popular training tools for functional strength training. In this kettlebell set from Gorilla Sports, tradition and innovation flow together. The dumbbells are made of sturdy cast iron and have no welded seams. Thus, they withstand even heavy loads during dynamic exercises such as snatching and pushing. The highlight is the soft cover. It protects the floor from scratches and dampens noise. The bottom of the dumbbells are flattened so that they do not roll away unintentionally.