Simba offers a whopping 1-year trial to test out your new mattress so you have plenty of time to work out if it's the right fit for you. If you decide that you don’t want it, you can return it free of charge. The trial starts when your mattress arrives and if you do decide you want to return it, you can organise a refund on the Simba website. Good news, you don't need to keep the original packaging if you end up returning it!