Be cool like a dirtbike pro! The uvex hlmt 4 is the secret star among the uvex children's helmets. It protects small riders reliably and with a lot of style.always on the move, to start with full energy into the next adventure. When kids explore their surroundings independently on their running bikes, bicycles, skateboards, inline skates and scooters, there's plenty of action to be had. All the better if the little ones are protected in the best possible way. The uvex hlmt 4 is a hard-shell children's helmet inspired by the dirt bike scene with a stylish design in a matt look. Impact-resistant on the outside, shock-absorbing on the inside and individually adjustable to the head thanks to the IAS system. Ten large ventilation openings reliably prevent heat buildup. With the monomatic closure, it can be opened and closed child-friendly with just one hand.IAS SystemWith the uvex IAS system, helmets can be adjusted in their width. After all, everyone has their own individual head. Heads differ, however, not only in their circumference, but also in their height.monomatic closureThe uvex monomatic comfort closure can be opened and closed with one hand. - Intended use: dirt / BMX - Helmet construction: shell construction - Adjustment system: IAS system - Function: with strap adjustment system - Test mark: EN 1078 - Closure system: monomatic closure - Visor / visor: without vents - Number: 10.