Alpinestars Nucleon Plasma Racing Chest Protector Insert The Alpinestars Nucleon Plasma Racing Chest Protector Insert combines innovative engineering with exceptional safety features. Designed to be both lightweight and breathable, it ensures comfort during use. The inclusion of a composite semi-rigid thermoplastic zone in the center enhances its impact protection capabilities. This blend of materials and design offers riders advanced protection without compromising on comfort. Features: Plasma is constructed from Usda certified bio-based eco-friendly and sustainable impact absorbing material Ultra-adaptive, vented and low-profile Nucleon Plasma viscoelastic compound construction for superior rider comfort Constructed with a soft tactile inner liner for additional rider comfort Super lightweight full chest protector insert is developed in three sizes Level 2 CE certified chest protector insert is a composite construction and has a central semi-rigid thermoplastic zone on a Nucleon Plasma chest protector for greater impact force dispersion in a critical area Innovative Plasma M design delivers maximum airflow and heat dissipation Soft tactile backing guarantees structural integrity of the protector by preventing any potential tearing Fully adaptive design for maximum comfort Extended side wings for greater coverage and protection of the ribs Silicone ribbing on inner side to prevent slipping and ensure the protector remains in place