http://www.zappos.com/happy-returns -the first 500 people who call 1-800-927-7671 at 11AM eastern time and let Zappos know that you have an unwanted gift that you want to donate to charity will get a pre-paid return label. In order to receive your $100 Zappos.com gift card, your unwanted gift must first be received by Zappos in new and unworn condition and you must use the pre-paid return label provided by us that is specific to this promotion.