Snowboard Arbor Helix 2019/20 kids Specifications System Rocker - rocker deflection that is more pronounced in the center of the board. On the toe and heel, the rocker is reduced for maximum performance at higher speeds, arc cutting and landing. Rocker delivers an easier start to the curve, better powder riding and a smoother ride overall. Mountain-Twin - shorter foot than toe for stability and ideal starting point for FSC Certified Highland Core -