The Horizon HV jacket has exactly the same protection and comfort features as the Horizon. The only difference is the high-visibility outer shell, made of 600D polyester CE-EN471 certified fabric, with additional reflection panels at critical areas. This helps you stay more visible while the Horizon HV is protecting you from the heaviest rain, or keeping you cool when the sun is high and the temperature is rising. This versatility comes from a truly unique solution, engineered by the REV'IT! development team: a large airvent panel, featuring a 3D mesh rear panel, which can be sealed to 100% waterproof in a second, even while riding. This innovative, paatented sealing system - VCS | Aquadefence - is laminated into the chest panel of the 2-layer, high-visibility outer shell. You will not find this technology anywhere else on the planet.