Alpinestars Nucleon Flex PROi Full Back Protector Insert

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Features Hybrid technology Alpinestars' Nucleon Cell and Flex technologies providing ventilation and flexibility Ergonomically contoured dual zone outer shell Advanced polymeric bl end with a solid cell structure core framed by a more flexible 3D cell structure Nucleon Flex technology layer on the central back zone More protection coverage in critical area Lightweight, ventilated and ultra-comfortable technology Rigorously tested and certified for proven performance in extreme temperatures Specs Product Name Guard Type Back Model Nucleon Flex PROi Base Color Black Color/Finish Black / Red Material Polymer Size All Size Group Adult Units Each Riding Style Adventure Touring / Dual-Sport / Off-Road Show more