Premium leather main chassis constructed from 1.0 – 1.2mm bovine leather. Strategically positioned stretch panels on sleeves and chest further improve fit and feel. Accordion leather stretch inserts on waist, elbow and rear shoulder afford high levels of movement. Two zippered hand pockets plus inner waterproof wallet pocket for practicality. Embossed logos and direct print graphic details. Zippered air intake vents are strategically positioned for optimized airflow when opened. Localized perforations for excellent ventilation and internal airflow. Low profile collar construction with microfiber comfort edging plus 3D textured fabric inner collar lining for rider comfort. Pre-curved sleeve construction reduces fatigue. Hook and loop grip cuff adjuster. Reflective details to make the rider more visible to other road users. Mesh lining for breathability. Removable thermal liner for versatility. The Caliber Leather Jacket is made from durable premium leather which incorporates strategically positioned stretch zones for fit and ventilation intakes for internal air cooling. With class-leading protection and the ability to upgrade to Alpinestars Nucleon chest and back protective system, the CE-certified Caliber Jacket is ideal for road riding.