Get training the right way with the Elite Arion Mag Parabolic Folding Rollers. Featuring parabolic-shaped rollers, an adjustable and foldable design, and adjustable magnetic resistance, the Arion Mag Parabolic Folding Rollers are the ultimate way to train or get warmed up pre-race. The rollers can be adjusted for any size bike and work with road and mountain bikes so anyone can use the Arion Mag Parabolic Folding Roller, and the parabolic shape helps to center the bike in the middle of the roller for a smooth and efficient training process. This roller is able to be connected to ELITE's My E-Training through the use of a Misuro B+ sensor so you can sync our power, cadence, speed, and other metrics with the training app we are using.