The hoodie was designed as a slightly warming, but above all breathable layer. And that's exactly how it works. I like to wear it as a top layer, especially when I'm doing a lot of ski touring. Not when the sun is beating down in spring, of course, but during high winter tours the ratio of warmth to vapor permeability has always worked perfectly. The hoodie is made from a synthetic fiber blend (polyamide, elastane) and lined with Coreloft Compact (polyester). Coreloft 80 was used in the important zones (on the body) and the thinner Coreloft 60 in the areas that require less warmth. The outer material is also stretchy and water-repellent.
The stretchability and low weight of the hoodie (375 g) make it extremely comfortable to wear. As a result, it has also become one of my favorite jackets in the city. Sweating on the way to the office by bike is a thing of the past. And surprisingly, the outer material can withstand short rain showers - the drops simply roll off, just like a waterproof 3L jacket. I noticed the same thing when touring during snowfall and when the other tourers had long since had to put on their hardshell jackets because their conventional softshell jackets were already getting wet on their shoulders and arms, I was still wearing the Proton Hoodie.
