100% polyesterThin running jacket with full zipper. Wind and waterproof material. The inside of the collar is lined with soft micro fleece fabric for superior comfort and feel. Your chin is protected by a dragkedjegarage. All zippers are quality products from YKK. All along the main zip is a reflex that gives you better visibility in the dark. For the best ventilation and mobility is the mesh portions of the stretch sides, all the way up to the armpit. They ventilate effectively excess heat without letting cooling speed wind from the front. The sides are also two hidden zippered pockets for secure storage. The bottom edge has a drawstring that allows you to efficiently control the fit and feel of the jacket. & Auml; is it a little cooler, you want to tighten the jacket to keep warm, and when you need more ventilation lets you easily in width and have a cooler jacket. & Auml; rmmuddarna are fitted with elastic in half lengthwise to provide a good ventilation. A lightweight and comfortable running jacket that is also so good-looking that you can wear it as a windbreaker when you are not training!