When Every Curb is a Jump and Every Patch of Dirt Screams for a Skid, The Tremor Mips® Helmet is There to Keep Smiles Wide. 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. The Tremor Mips® also includes an integrated Multi-Directional Impact Protection System (Mips®), which can redirect energy and provide more protection in certain impacts, providing the latest in head protection technology for junior riders.