Warned by other reviews I checked like the maintenance of the rubber feet - this appeared very strong. Nevertheless, one of the rubber dissolved after two weeks unnoticed and was lost, making the maintenance of the bike on soft ground is no longer optimal. Otherwise, the bicycle is great - no comparison to the usual Einbeinständern. Still, it's sad that the manufacturers do not seem to get in the grip problem with the rubber feet - an otherwise structurally identical product I have another bicycle for many years with no problem in use.
