Kettlebells are very simple but effective home gym equipment that are very effective in improving core strength and stability and are increasingly popular in Cross Fit and circuit training. The Ironman 4kg Cast Iron Coated Kettlebell features a flat bottom for stability, a large comfortable handle and the colourful coating helps protect floors. Kettlebells can be used in a wide variation of ways to exercise making them ideal for home fitness workouts. They can be held in different ways to vary exercises and you can even use them as a handle for uneven push ups.