Our team has verified the GAP coupon code "ADDON," which has been tested directly by us in October 2025 and proven effective for the best discounts when shopping at GAP.com. Our experts have confirmed that this code offers up to 10% off eligible products across various categories, including clothing, accessories, and footwear from GAP. To optimize your shopping experience, activate the "ADDON" code. Enter the coupon code "ADDON" at GAP checkout. This code applies an additional 10% discount when eligible items are added to your cart. We have thoroughly validated this promotional code and can confirm it is currently the most advantageous option available for use on a wide range of products at GAP.com.