My problem: I had bought the school in order to use them in a longer-South of France holiday. After only 2x easy walks to the side strap has disengaged from the rear, despite the fact that this belt is virtually no strains exposed! ! At the contact point can be seen that the belt is simply connected to a bonding point! I do not know how far this has also been my old Tewas so, but could not imagine that this body has been sewn and possibly glued in addition - at least I had in these no processing problems.
I will send the shoes now under warranty back and will order the model again, hoping that this then keep permanently. Perhaps the bond was poorly?