ALPINESTARS Nucleon KR-Cell Back Protector - XL 6504018-13-XL Competition Lever Pleated design provides increased air-flow

Pleated design provides increased air-flow and high filtration

Accordion panels on elbows help movement and comfort on the bike

This also allows lever effort to be kept to a minimum - even with big-inch motors

FCS® cheek pads design delivers comfort and support and features 5 mm peel-away custom-fit layer

Bio-mechanical lateral flexi-blade system provides excellent front and rear movement while offering support and protection to the ankle

ALPINESTARS Nucleon KR-Cell Back Protector - XL 6504018-13-XL Competition Lever Pleated design provides increased air-flowDeveloped in three waist to shoulder dimensions in order to cover all body size types Back hard shell plates are constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties Shells are highly perforated for maximum breathability and air ventilation Single injected compound shell constructed with triple layer design to absorb impacts and allow maximum airflow Ergonomic protector plate