Cotton material: The protective hat is made of breathable cotton and elastic sponge inside. The baby safety helmet very comfortable to wear, non-toxic, BPA free, safe for children. Effectively protect the baby's head: this children's protective hat has the function of shock absorption, cushion, protect ears, fully protect toddlers' head 360 degrees during crawling, playing and walking. Lightweight and breathable: Special hollow design ensures that the baby does not get hot step when wearing it and give the baby a breathable and comfortable wearing feeling. It is soft and light, which makes it foldable and easy to travel. Comfortable size and adjustable size: the circumference of 55 cm is specially designed for babies from 5 to 36 months, the velcro on the back can adjust the size of the hat, and the chin has an adjustable string. Easy to clean: it is important for the baby to keep clean, the baby helmet is water washable and there will be no deformation after repeated washing. And these baby hats are suitable for all kinds of weather conditions, such as spring, summer, autumn, winter.