Leather medicine balls are extra durable, all-leather construction with nylon reinforced seams.  They are a great tool for a complete body workout, especially if  combined with a gym ball.  They can be used to strengthen shoulders, back, arms and legs as well as improving core trunk strength and joint integrity. Medicine ball workouts provide weight-resistance through a full range of motion.

A smaller person (say < 70kg) should choose a 2kg and a 4kg ball; up to 95kg, a 3kg and a 5kg unit, and anyone bigger, a 4kg and a 6kg ball.