Soft Breathable Materials:The baby safety helmet is made of soft material, 100% cotton, breathable net, and the filling layer is a high-density elastic odorless sponge. The sponge has a shock-absorbing effect, which can reduce the impact force during the impact, and the safety is greatly improved. Comfortable and Adjustable:The baby crawling helmet is adjustable to fit any baby's head size, and the Y-shaped strap keeps the hat in place for maximum safety and comfort for your beloved child.It's easy to put on or remove the straps. Full Coverage Protection:360 degrees full coverage to protect the baby's safety, is the baby practice crawling, walking security guard, whether it is falling backwards or forward can prevent the baby's head due to sudden fall or collision caused by bumps and bruises. Easy to use in Multiple Scenarios:Not only suitable for young children to train standing, crawling, walking, that is, indoor use is also very suitable for outdoor use, in the lawn, park, and even travel to the baby is also a good choice. Note:Head circumference is about 17-22 inches, adjustable, because it is purely manual measurement, there will be 1-2cm error, if you mind, please be careful to take a photo, if you have any questions about baby crash helmet hat welcome to contact us, we will do our best to provide you with an effective solution. 1.Full Coverage:The high-density padding cotton makes this anti-collision cap play a good protective role, almost 360 degrees of protection without dead angles, soft and elastic. 2.Application Scenarios:It is suitable for children aged six months to two years old to train crawling, and protect the baby's head from greater damage when walking. 3.The ergonomic strap design holds it firmly in place to prevent it from falling off while playing. 4.The soft and breathable material makes it very comfortable for your baby to wear.