I wear these slippers just for a short time in the morning and evening only, and a hole has developed in the woven fabric over my big toe.  This is not because I have sharp toenails; the woven fabric has just separated.  I paid a lot for these slippers and they're fine otherwise, so I'm going to attempt to repair them.  The very poor rating is because Haflinger appears to have no online presence, which makes them seem uninterested in addressing customer issues.