Use code:at checkout.
Some fine print:
Discount applied to AE, Aerie and AEO Factory merchandise only prior to sales tax and shipping & handling. Only one discount of any type may be used at one time. 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. Excludes all Aerie Undies. Offer excludes merchandise from these brands: Aden +Anais, Adidas, Bass, BC, Bed Stu, Birkenstock, Chronicle, Clarks, Creative Rec, DV, Eastland, GOLA, Junk Food, Me Too, MIA, Minnetonka, New Balance, New Balance/PF Flyers, Old Soles, Palladium, Reebok, Saucony, Sperry, Steve Madden, Sweet Shoes, Tailgate, Timberland, and Tretorn. Discount and associated terms & conditions subject to change at AE's sole discretion.