With the rs. sturmPrinz EVO Windproof jacket the objective was to create the ideal rain and wind protective jacket for high performance cycling, no holds barred and no corners cut by the accountants! However, Assos' aim was not to make a 100% waterproof jacket. Why not? Because 100% waterproof also means 100% impermeable - sweat builds up and can't escape. Not what you want. The evaporation process must be proactive, it mustn't be slowed excessively by your protective shell - which ultimately leads to cold and chills. Read more… To this end the rs. sturmPrinz EVO protects but also breathes incredibly well maintaining body temperature and comfort. Assos have calibrated and optimised the balance between insulation and protection, without jeopardising your performance, giving you a functional, intelligently engineered, cycling-specific anti- rain device that works! This has been acheived through the use of exclusive TRITON fabric, specifically engineered by Assos for the rs. sturmPrinz jacket. The sturmPrinz use two versions of TRITON. The front panel features TRITON V1, a robust fabric engineered to be more resistant, and the back panel uses the lighter, more breathable TRITON V2. Ergonomically shaped to fit your body in the cycling position the jacket sits close and then follows your movements. Thanks to the high performance TRITON fabric, ASSOS have been able to tailor the jacket closer to the body, resulting in less volume and no “balloon effect,” providing total freedom of movement. This is a jacket ideally suited for hard riding and racing on-the-rivet when the rain is incessant.