Returns and Exchanges I would like to return my order. How do I go about it? How long do I have to return my order, if I wish to do so? I have ordered multiple items – but I only want to return one / some. How do I go about it?. Can I return a CPAP mask or mandibular advancement device once I have used them? Do I get a return label for free shipment of return orders from you? How quickly will you reimburse me? What happens when you decline the return of my order? How do I exchange an item (e.g., for a different size)?