1[Protective Helmet]: This crawling kids bumper helmet can lessen the damage to the baby&39;s head when the baby collided, reduce shock, protect the healthy baby&39;s brain, and keep it away from the head. And this baby hat is suitable for all types of weather, such as spring, summer, fall and winter. 2 [Lightweight and Breathable]:it has the advantages of shock absorption, impact resistance, breathability and softness. 3 [Suitable Age]: From 0 to 3 years old (6 to 36 months), infants learn to crawl, walk and play to protect their head when the young child falls and prevent it from standing. to hit. 4 [Suitable Baby Head Size]: With 43cm ~ 53cm head protection circumference, the tap can be adjusted to suit baby&39;s head, the weight is light and it is very soft. 5 [Tip]: This infant head protection helmet can not be used as a professional baby helmet, so please use a professional helmet when riding bicycle, electric bicycle and motorbike and playing outdoors. Keep babies away from heat sources and sharp objects.