?? Main chassis constructed from 1.3mm premium leather.?? High-density perforation zones throughout plus perforated leather panels on torso and arms for optimal levels of ventilation and airflow.?? Large accordion stretch panels help movement and comfort on the bike.?? Hyper-Resistant Stretch Fiber (HRSF) panels on sleeves, crotch and torso further improve fit and feel.?? New full circumference waist connection zipper to securely fasten the upper and lower garments together.?? Ergonomic back hump, sculpted for better airflow and performance at high speed.?? Pre-curved sleeves and legs construction effectively reduces rider fatigue on the bike.?? Calf expansion gusset for comfort.?? Inner waterproof wallet/ document pocket for peace-of-mind storage.?? Multiple snap button system to integrate the Level 2 Alpinestars Nucleon Back protector.?? Soft 3D textured fabric collar for improved rider comfort.?? Level 1 Alpinestars Bio Armor protectors on shoulders and elbow.?? Level 1 Alpinestars GP-R protector on the knee.?? GP Lite inner shoulder reinforcements.?? Removable and replaceable Sport knee slider.?? According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply to this product:?? CE Category II PPE Regulation (EU) 2016/425 ? AA class.?? CE Level 2 EN1621-2:2014 Alpinestars Nucleon back protector.?? CE Level 1 EN1621-1:2012 Alpinestars BIO Armor shoulder and elbow protectors.