A helmet designed for recreational snow sports may reduce the risk of some types of head injuries. Helmets are strongly recommended. In some ski area programs (for example snow school lessons involving minors) helmets are mandatory. Helmets for skiing and snowboarding are light, comfortable and have achieved wide-spread acceptance. Please note however that helmets have limitations and that serious head injury can still occur even when a helmet is worn. Wearing a helmet is no guarantee of safety.