The 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 they ride. The Scamp Mips® also has the inclusion of the Multi-Directional Impact Protection System, which we believe can redirect energy and provide more protection in certain impacts.