purchased 2 pairs of shoes: nike air max 2009 and nike rejuven8. upon inspecting the air max, there was no partition for the ipod sensor (authentic nike+ shoes have these). emailed a2zshoes.com about it and this is their response: "Dear XXX, Thank you for contacting us. We do not guarantee authenticity and do not inspect cases of in-authenticity or accept returns in in-authenticity cases. However if you wish to return the shoes you may do so according to our return policy. Kind Regards, Danny Fleming Customer... read full review »