Rain hat for cyclists. Small, practical and compactly stowable. With reflective elements.
Not quite stylish, but super practical is the C3 Gore-Tex helmet cover from Gore Wear. If it starts to drizzle, simply unpack your rain covers for the helmet. It is quick and easy to put on. Now your head stays dry. Thanks to the reflective elements, you'll also be visible even in bad weather. The helmet cover is small, but very practical.