Sorbies are inviting parents of babies to take part in their Sorbies Smart 14 Day Nappy Challenge and in return for your participation they will send you $5 Cashback, redeemable on your next Sorbies purchase. To take part in this challenge, all you need to do is purchase a 2 week supply of Sorbies Nappies, and then register your details online via their website. From there, you will need to record your experience on the online diary once in each 3 day period; then when the challenge has been completed, you will receive your $5 cashback. There's also the opportunity to win weekly spot prizes, plus 3 x 6 months supply of Sorbies Nappies. Also, if you register as a group of 3 persons or more, you could win weekly $50 Muffin Break Vouchers for you to share with the group. So take up the Sorbies Smart 14 Day Challenge for your chance to win prizes and receive a $5 Cashback.