Nucleon Flex PROi Full Back Protector Insert

• 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