The tire is relatively large, weighs just over one kilogram has on the inside 48 huge magnetic studs. These make the turn at first very painful. It is to be expected in any case with huge bruises. I initially trained easily with a thick sweater, because you sweat more quickly. After about a week of training not huge, dark bruises more were there, but the training without sweater still was not. After about 2 weeks the training works great even without sweater, no more pain. You have to persevere only then it will after a time. I always train for about an hour so. It's super easy to keep the tires up, he falls as no longer shut as well, the problem I had really only the first few days. So all in all 5 stars.
