I purchased these 9 months ago and I already have holes in the heels. I use them everyday on my treadmill and they are supposed to last more than that. I was not able to honor my return here so I called Reebok and they said they will honor the return only if it was a manufacturer defect. I sent them in to Reebok at my own expense..dont know if they will exchange for another pair or give me a Reebok gift card to use for new shoes. Will keep updated as to how Reebok handled this problem.