Features: 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. Integrated padding for increased levels of rider comfort. Inner waterproof wallet/​document pocket for peace-of-mind storage. Multiple snap button system to integrate the Level 2 CE-certified Alpinestars Nucleon Back Protector. Soft 3D textured fabric collar for improved rider comfort. CE-certified Level 1 Alpinestars Bio Armor protectors on shoulders and elbow. CE-certified Level 1 Alpinestars GP-R protector on the knee. GP Lite inner shoulder reinforcements. Removable and replaceable Sport knee slider. CE-certified to Category II prEN17092 draft standards - AA class.