ALPINESTARS Nucleon Flex Proi Full Back Protection Insert - Transparent Smoke/Red - Large 6526323-003-L phone Voice Coil Diameter 4" /

Voice Coil Diameter 4" / 99

Cell structure ensures maximum comfort and ventilation Protector cells are bridged together

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This weatherproof fuse holder is completely sealed from the elements

ALPINESTARS Nucleon Flex Proi Full Back Protection Insert - Transparent Smoke/Red - Large 6526323-003-L phone Voice Coil Diameter 4" /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