In addition to the Tremor Helmet´s cool style, it offers an easy to adjust fit system and 18 vents for breathability, making it a big hit with little shredders.Featuring some of the best technologies from our adult line, like In‐Mold construction for reduced weight and enhanced durability, and our acclaimed Roc Loc Sport system for fast, secure fit adjustments, ensure that the Tremor is ready for any ride.Key Features: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® Sport Fit System:- The Roc Loc® Sport fit system offers easy one‐handed operation with a 7cm adjustment range. Its confident clicking feel and sound lets riders know that the helmet is adjusting to a comfortable fit. With comfort similar Roc Loc 5 and ponytail compatibility, the new Roc Loc Sport fit system brings premium function to sport level helmets.Universal Fit ™ Sizing:- Our Universal Fit helmets are sculpted to look good and fit great for almost anyone on the first try. By developing proprietary shell sizes based on specific customer groups, and combining them with an easily‐adjustable fit system, it´s easy for you get the right fit, straight out of the box, without the hassle or expense of trying multiple sizes.Specifications:- Material: 57% EPS, 14% PC, 1.3% Nylon, 15% PP, 1% POM, 2.6% PU, 6% Polyester, 2.6% Fiberglass- Weight: 285gCertifications:- Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older