Sportswear label Nike has posted a warning on its official website at nike.com.hk about a coupon that has been circulating on the internet over the last couple of days. The coupon (below), which prominently features the brand logo and the discount amount, looks official and genuine. It also carries terms and conditions that include the dates of its validity. The company said that the 20 per cent discount coupon was a hoax and that the firm had nothing to do with it. Nike urges members of the public not to forward the e-mail which contains the coupon to their friends. The firm, which received a telephone enquiry about the coupon earlier this week, is conducting an investigation into the case.