PHYSIOTHERAPY BALL or MEDICINE BALL or TORNADO BALLS or HEAVY BALLS
These are balls of different sizes, with different weights. They usually start at 1 kg and can reach up to ten kilograms (kgs). They are usually made of leather or special material so they do not slip, as they are usually used for sharpening or carrying exercises that want the handle to be strong. There are medicine balls with handles (which is a blend of dumbbell with ball for better and stable grip but less throwing ability), with ropes or bands for throwing etc.
