This snowboard back protector is the result of a fruitful collaboration between riders, engineers and chemists. The most technologically advanced product in this segment to date has received a rigid composite protection of the upper spine and an overlay for the thoracic and lumbar region of viscoelastic foam that softens and absorbs shocks. The material resembles non-Newtonian substances, that is, with a quick impact, it behaves like very viscous materials and distributes the load over a large area during impacts, and with a slow impact, it is easily pressed through and takes the required shape. Symbiosis has passed CE EN1621-2A certification. For greater comfort, the vest is made of durable, well-ventilated mesh material. Plus, there is an elasticated waistband to prevent shifting at the waist.