A bike helmet is designed to protect your child's head in the event of a fall or accident. While a bike helmet can provide many years of protection, it may eventually need to be replaced if it becomes damaged. Here are some signs that your child's bike helmet may need to be replaced:-The helmet has visible cracks or holes.-The helmet is dented or compressed.-The straps are frayed or torn.-The foam inside the helmet is cracked or missing chunks.If you notice any of the above signs, it is important to replace your child's bike helmet right away. A damaged or compromised helmet may not provide adequate protection in the event of an accident.