40% off your purchase automatically applied at checkout in US stores only. Offer valid beginning December 7, 2011 at 12:00 AM EST for a limited time only. Offer not valid in Aerie Canada stores. Discount applied to Aerie merchandise only prior to sales tax. This discount is not redeemable for cash, nor is it valid toward any previously purchased merchandise or the purchase of merchandise certificates, gift cards or e-gift cards.