i canīt complain about the warranty service of sporitva. They changed my miuras when the leather broke without any problem and my katanas where the sole peeled off also (happend 2 times in series). but it is too complicated for me to always send in the broken and wait for the new ones. so i just switched to scarpa and i donīt regret it. They generally fit me better (or at least equal), they have an equivalent to every sportiva shoe and i never had any issues with them till now and iīm wearing my sixth pair now.