I've been wearing Nike's 'Breathe' line of shoes for the past several years now. They've treated me well! I've also taken advantage of the 6-month sole guarantee many times without any problems whatsoever from Nike. Nike's customer service is top notch. Recently, I purchased a pair of the Ballistec 1.3s. They hurt my feet, and simply did not compare to the 'Breathe' line of shoes. I contacted Nike and without any hesitation, I was provided a return label to send the shoes. I sent them back and received a refund. Each time I've contacted Nike for the sole guarantee and then this last time for the return, the representatives have been extremely polite and courteous. A big thumbs up to Nike!