Details: To redeem your Birthday promo code, log in as a Member to Nike.com or the Nike App on or after email receipt of the Birthday promo code and it will be applied automatically during checkout for an additional 10% off select items. Discount applies to first $500 of qualified purchase. The Promo code is valid for one use only. Shipping charges and taxes are calculated after the discount. Not transferable and not redeemable for cash, gift cards, credit, or toward previous purchases. Redeemable on Nike.com, Nike App, and its affiliate pages in the United States.