Parabolic shape make it easier to stay on.
These rollers have an adjustable length to fit nearly every bike - from track bikes to mountain bikes! They have 3 levels of resistance, and a floating system to absorb sudden shocks, like starting up. Fold up in thirds to save space for storage. Come with the original packaging. Details: Highly innovative home roller system integrate performance and safety Effective training with magnetic resistance and three resistance modes Floating system absorbs sudden forces to minimize shock to steering Adjusts to fit nearly all road and mountain bike frame si...