The 1 kg, 2 kg, 3 kg, 4 kg, 5 kg, 6 kg, 7 kg, 8 kg, 9 kg to 10 kg rubber medicine ball from Gorilla Sports has a weight of four kilograms and a diameter of 23 centimeters in the black and blue version. Its textured surface offers a pleasant feel when throwing and catching. The black and blue rubber medicine ball is part of a ten-piece series from Gorilla Sports. Each of the ten balls, weighing between one and ten kilograms, is assigned its own refreshing color. The medicine ball made of rubber stresses the whole body when throwing and catching. In ten different weight classes, it can be used excellently in rehab as well as in functional fitness workouts.