ALPINESTARS Nucleon Flex PROi Full Back Protector Insert - Transparent Smoke/Red - Medium 6526323-003-M

Nucleon Flex PROi Full Back Protector Insert - Transparent Smoke/Red - Medium Hybrid technology Alpinestars' Nucleon Cell and Flex technologies providing ventilation and flexibility, Ergonomically contoured dual zone outer shell, Advanced polymeric blend 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