Bring in a bag of unwanted clothing to H&M and receive a coupon for 15% off your next purchase! Together, we can close the loop. *One coupon redeemable per transaction. Cannot be used on purchases of H&M gift cards, designer collections, or in conjunction with any other offer. valid only at H&M stores in the U.S. Learn more about H&M's Garment Collecting Iniative by visiting the link above.