You have a 14-day 'cooling-off period' when buying something you haven't seen in person - unless it's bespoke or made to measure. Your cooling-off period starts the day after you receive your order, and there doesn't need to be anything wrong with the item for you to get a refund. If you do request a return during this time, as long as any items are unused and fit for resale, you are entitled to a full refund including delivery.