Rear wheel trainers wear the center of standard rear tires down extremely quickly, especially the grippier rubber of higher end folding tires.

So these tires are made of super hard durometer material blend that can stand up to a winter or three of indoor training.

Designed expressly to disperse heat and reduce noise generated by home trainer use.

Red color only, to remind you that these tires are not made for riding outside. 

700x23 size.