Our helmets are built tough with a strong outer shell (ABS Material)and a soft high-density EPS, cushioned interior. They're designed to shield your little ones from bumps and falls during play. Complete with additional protective gear, we ensure you can safely enjoy the sports and playtime without worry. Stay worry-free, keep yourself safe! The Helmet has an adjustable knob, can easily adjust to the most suitable for the child's position, the helmet has vents, very breathable, even in the hot summer can keep the baby cool, the internal soft pad can absorb sweat, reduce sweat when skating, safer when playing sports.