With a modern roller and the UltraSport Hometrainer in the house, winter can set in when it wants to. Thanks to its special cold-running compound, the UltraSport Hometrainer doesn't experience the heat buildup of a road tire, nor does it suffer the tread separation that the road tire is prone to under the special loads occurring when cycling and braking on the rollers' revolving drums. The UltraSport Hometrainer has been designed specifically for rollers and is not suitable for on road use.