Alpinestars Nucleon Flex Pro Full Back Protection Insert - 6526323-003-L - Black/Red - Large

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