The Kilpi RAYEN-W is a women's running jacket made of ultra-light and breathable SIBERIUM material, which is treated with a lightweight DWR water-repellent coating. The more stressed parts, such as the hood, chest and shoulders, are made of densely woven windproof material. Breathable mesh material is used on the back and armpits, which lightens the weight of the jacket, which is only 190 grams in size 36. The jacket can be easily packed into one of the two zippered pockets. The sleeves are extended, with a thumb hole. On the left sleeve there is a hole for the watch. The front zipper is two-way and will serve for better ventilation. A looser fit won't restrict your movement. Of course, Kilpi products have distinctive reflective elements.Material composition: 100% nylon