Giro Agilis MIPS Cycling Helmet for Men'sThe Roc Loc Jr. fit system with pinch guard buckle provides an easy way to fit your kid's helmet quickly and securely. With a wide size range, your child can use this helmet as they grow from balance bikes to training wheels. The design is inspired by the adults' Montaro MIPS Montara MIPS, and since the Scamp is available in a range of kid friendly colors and designs, let your child pick out their favorite so they'll be excited to wear it every time