If you’ve ever struggled to ride in a straight line or nearly swerved off the road reaching into your jersey pocket, then cycling rollers could improve your balance and coordination. Any pro rider will tell you that it’s not necessarily the size of the engine that matters most, but how efficiently you use it. Developing a smooth, efficient pedal stroke will not only teach you how to ride more economically, it’ll also improve your balance and core stability. Not all rollers are created equal. Here’s our roundup of the best cycling rollers to fit the needs of recreational riders and racers.