it did its job saved the guys skull , they clearly say once they been hit once get a new one
Brittle plastic....should have been strong enough as the polystyrene liner give it rigidity
it doesnt have to be at 90mph to cause injury as im sure many of the people who have been injured will vouch for at 50 mph the ball will still cause significant damage. The BSI testing only caters for speeds of upto 65mph which im sure you will see in most decent standards of cricket
Jesus Christ