During the in-between seasons, a lightweight jacket is essential. When the days are still warm and the nights are cold, you just throw yourself into a windbreaker and defy every flu and fever. Windbreakers are particularly suitable for quick, spontaneous weather protection, as they often come in a small foldable pouch. Small, compact and easy to pack, (often even stowable in one of the sewn-in pockets), windbreakers are the ideal companion for racing bike tours, trail running, or a stroll through town. Particularly robust windbreakers have the thread size Denier 9. The greater the thread strength, the higher the tensile strength of the material. Because they are made of simple nylon fabrics, the breathability of the material is not very good. However, this makes them all the more perfect for absorbing the spray from your rear bicycle wheel.