Dynafit says about the Ultra S-Tech Jacket M
This close-fitting jacket is just the right choice for intense long runs in the mountains. Innovative S-Tech Technology was also integrated here in its design to improve comfort and freedom of movement for ultra runs in particular. At the front, wind-resistant and yet breathable fabric was integrated, while a technical mesh fabric was incorporated into the back. This guarantees breathability even on long runs with a pack. For the inner face, polypropylene was selected to offer the best possible moisture transport. The fabric dries very quickly and also prevents chills during quick breaks. The jacket features two zip pockets.