A protective vest made from shock absorbing polystyrene foam covered in material and attached to the body with zips or velcro straps. Body protectors typically cover the back, sides, and chest of the rider, some include attachments for the shoulder and upper arms. Body protectors can reduce injury to the rider in case of a fall by absorbing some of the force of impact. In many countries they are subjected to regular testing by safety standards organisations and are certified to various levels of protection. Wearing of body protectors is mandatory in certain equestrian sports such as racing and eventing.