When you've borrowed someone else's helmet
							                                
                                        
                                    
							                        
                    
                            When the helmet is more than four years old
							                                
                                        
                                    
							                        
                    
                            When the helmet doesn't have chin protection
							                                
                                        
                                    
							                        
                    
                            When the helmet isn't fastened correctly
							                                
                                        
                                    
							                        
                     
	 
	