The Alpinestars Nucleon Plasma Divided Chest Protector Insert delivers advanced impact protection with a lightweight and breathable design, ensuring comfort without compromising safety. Built with the innovative PLASMA M structure, it features extensive perforations for maximum airflow, a soft tactile backing for durability, and a sustainable impact-absorbing material for reliable performance. Designed for superior comfort and protection, this chest protector insert includes the following features: PLASMA M design: Features extensive perforations that actively channel airflow across the surface, reducing heat build-up to maintain consistent ventilation and rider comfort on long journeys. Soft tactile backing: Reinforces the protector s structure with a durable inner layer that resists tearing while ensuring the chest protector remains intact and reliable under repeated impact forces. Bio-based impact-absorbing material: Constructed from USDA-certified sustainable material that effectiv