Saris Magnetic Bicycle Rear Wheel Trainers
About Saris - "From product design to test engineering to manufacturing, we own our entire process. We source material locally through long-standing partnerships and we respect and appreciate the natural environment. Together we strive to create the world's best bike racks."
Trainer resistance is available in fluid, wind, magnetic and electronic. Magnetic trainers are most common and have fixed levels of resistance. Fluid trainers have progressive levels of resistance; the harder you pedal, the more resistance they provide. Wind trainers tend to be very noisy, as they generate their resistance from a fan. Electronic trainers require a power source and can often provide the most powerful and precise levels of resistance. They sometimes can include virtual reality interfaces for a more interactive experience.