My 12 year old son is, quite literally, burning through shoes. He used to wear "junior" shoes with no guarantee as his feet were too small for adult shoes with a guarantee. 6 weeks ago, we replaced his Babolat Propulse 4 with the adult version and he is a week or so away from needing replacement. Is there anything more durable? He has medium wide feet. He plays everyday for 1.5-2 hours on hot hardcourts in Phoenix, Az.