Yes you can. The cost of return is your own and the order must be returned to us packaged as we sent it you within 30 days of receipt.
Therefore the product(s) should be packed within the outer packaging of the air bubbles/protective packaging and outer box to protect the lights on their return journey to us.
Once return has been received, it will be checked and your refund will be processed accordingly. We would always recommend you return the order to us via a tracked courier.