Wilier Triestina Jena GravelWilier Jena Carbon Gravel Bicycle Jena is a carbon gravel bike, designed to give you more freedom of choice when you go out for a ride. Jena was designed to satisfy any of your needs, whether it is performance on dirt roads and single track, or adventure, exploration, and bikepacking. Jena is a light, reactive, and easy to handle bike with racing comfort geometries, and able to adapt to the multiple uses required of a gravel bike.