A swiss ball is an exercise ball constructed of elastic soft PVC with a diameter of approximately 35 to 85 centimetres (14 to 34 inches) and filled with air. As a profession, Body Conditioning / Swiss Ball is relatively low risk but you do need to protect yourself and your business. In today’s world, people are increasingly ready to take legal proceedings for compensation and the incidence of claims against therapists is on the increase. The unexpected can and sometimes does happen and the price of our liability insurance cover is a tiny fraction of the likely cost of a claim.