S1 D3O Mesh Jacket. Built on the chassis of the original S1 Textile Jacket, the S1 Mesh D3O version is designed for warm-weather riders who wont sacrifice protection. Fully ventilated mesh panels maximize airflow, while a removable waterproof thermal liner adds adaptability when the weather shifts. With CE AA certification and D3O Level 1 armor in the shoulders and elbows, the S1 Mesh Jacket delivers breathability, versatility, and everyday performance in one striking package. Safety: CE Certification Rating: AA. D3O Level 1 Armor: Shoulder and elbows. Back and Chest: Armor-ready with pocket ONLY. Material: Outer Shell: MaxTex Lite construction with mesh paneling. Lining: Fixed mesh lining for breathability. Key Features: Comfort: Removable waterproof thermal liner.