Thanks to the folding frame, the skating technique can be optimally simulated so that the skating technique can also be worked on in the summer. Because the forces on a skate frame are much greater than on a skate, the frames had to be very sturdy and many real skaters found the frames too heavy. In terms of speed, however, it does not matter and for people who want to train skate specifically, a folding frame is the ideal solution.
13.2 inches.