Elite Rollentrainer Nero: Simply ride with your own bike. The Elite Nero roller trainer allows you to ride directly with your own bicycle without the need to disassemble it first. The free rollers with a floating system are parabolic in shape, providing a smooth ride, increased safety, and improved balance. The Quick-Motion frame is foldable, making it easy to set up, take down, and store the training device. With an electronically controlled resistance unit, the roller trainer communicates with all common training apps that support the FEC protocol. Product details: Rollers: Parabolic shape made of antistatic plastic. Resistance levels: infinitely adjustable. Resistance: magnetic resistance unit, electronically controlled.