The Kreitler Rollers Killer Headwind Unit is the perfect addition to your indoor or outdoor cycling training. This resistance fan is made of durable metal and comes in a sleek black color. The unit includes a fan, frame, and is compatible with universal wheel sizes (it does NOT include the rubber band). With adjustable resistance and a realistic headwind sound, this unit provides a challenging and effective training experience. The Kreitler Roller model is designed for cycling enthusiasts and is manufactured in the United States. This unit weighs 7 lbs and is categorized under Trainers & Rollers, Bicycle Accessories, Cycling, and Sporting Goods.