Did you take them back to the retailer where you bought them? I doubt you took them back to "Nike." Call the retailer store manager and try to get the ability to return or exchange them (over the phone) before you go back to the store. I'm out of NKE now and with those pumps that say "now" is the buying opportunity (early or midweek last week was, not now) I'm tempted to short NKE, but likely won't do it, at least not today. I know I won't be long NKE at this price, though. It was a good report, but isn't that already in the price, especially now?
I wouldn't short NKE, but buying puts is definitely a good play. Right now, the stock is 11-12% above its price before earnings. Their quarterly results were impressive, but they don't warrant such an appreciation. At the present time the stock offers limited upside compared to its downside.