Duradero products are built to the highest possible standards. In addition your boots have been stamped with a serial number in the tongue. This is a sign that your boots have a "built in second life." The first time you wear down your outsoles (If you see the orange midsole it's for sure time to send your boots back to us) just click here to get your free shipping label and drop off at your local fedex location. Within 2 weeks you'll have your boots back and they'll be like NEW!