The V2 Aero XL 150S I mentioned above are roller skis that XC pros use, you wear ski boots and they have ski bindings on them. Only the two kinds I mentioned above have inflatable tires though, all of the other models that XC skiers use have poly tires. With the poly tire models if your roads are not perfect you can get caught on small imperfections and have bad falls.. been there done that.

.. I talked to some experts and decided to buy some of the Ski-ke's I mentioned above .. they are not quite as good for XC cross-training but I don't need XC cross training. I have some poly wheel Ski-ke's which I'm going to sell. For cheap if anyone wants them, only useful on smooth tarmac.

It is indeed a great work-out, XC-ing for real in the last few weeks reminded me how good it is. I really liked my previous Ski-ke's if not for the tire problem.