HARDSHELL WITH IN-MOLD HARDBODY LOWER WRAP — The two-piece shell combines a tough outer hard shell with a polycarbonate lower shell permanently fused to the liner for durability without excess weight. ROC LOC JR. FIT SYSTEM — Roc Loc Jr. is a simple, durable, dial-fit system specifically shaped to match the curvature of a child's head. The shape was developed with years of research into anatomic data to ensure a secure, comfortable fit. A large, rubberized knob makes it easy for adults to adjust the helmet for proper tension, allowing kids to start their ride quickly.