Yes, those are the ones I use. Whenever I have less than an hour and no high intensity intervals to work on, I hop on those instead of the trainer. Quicker to set up, help with handling skills, and make the workout feel harder than it really is. They do fold down really small and it doesn't take any time to fold/extend them, but I just leave them open and roll them under a couch for storage. If I could only choose one I'd stick to the smart trainer but I like using the rollers once in a while too.