youth sequence neck roll blue medium blue white YGroup_8950124 and reinforced seat and knee

and reinforced seat and knee zones deliver freedom of movement

The Nucleon Flex Proi is compatible with all Alpinestars’ sport and touring jackets that have released since Spring 2022

and reinforced palm zones ensure control and comfort in summer riding conditions

Built for MX and off-road hot-weather riding

contrast running stitch

youth sequence neck roll blue medium blue white YGroup_8950124 and reinforced seat and kneeThe Youth Sequence Neck Roll is a youth neck protection system developed for young riders and drivers across motocross, mountain biking, and karting, helping reduce muscular injury risk from excessive forward, rearward, and lateral head movement. Its double density PU and EVA core, extended tail, and comfort focused neck and shoulder interface work together to improve stability, dissipate energy, and distribute impact forces more effectively.