The Spinning® A1 comes with a 40 LB perimeter weighted flywheel, a new open frame design that employs oversized commercial scale racetrack frame tubes for more durability, fore/aft incremental adjustment on the seat to provide a personalized fit, dual sided SPD® pedals for to enable riding with either cycling shoes or sneakers and it boasts a contoured sweat guard that channels sweat and moisture away from flywheel and drivetrain components, helping your bike last longer.