The lightweight & breathable baby safety helmet offers most ideal protection for toddlers during crawling/playing. It is an ultra lightweight lovely safety baby helmet for walking. The head cushion can effectively protect the baby during the collision and the friction caused by the bump and fall. The bumper bonnet does provide an anti-knock, anti-friction, reduced shock, cushioning effect, prevent or reduce the baby's head injuries Adjustable 18.8-22" circumference is specially designed to suit any size of infant head, offers maximum safety with comfort for your loved kids The outer layer is made of cotton, the fill-in layer is a high density and elastic sponge free from smell. The sponge offers shock-absorbing and can reduce the impact force when hit Weighs just 3 oz with thickness an inch, the cotton belts will help securing the product on baby's head with maximum comfort Keep clean is important to the baby/toddlers, the baby hamlet is washable with water and there will not be any deforming after repeated wash.