We are so confident that the E-Nano vaporizer is the easiest, prettiest, most economical vaporizer you will ever use that we guarantee it. If you don’t find it does not meet your expectations we will give you your choice of refund or store credit less shipping and handling provided you request an RMA here: requestRMA within 7 days of receipt of your package. You can keep the glass stem as a gift from us just for trying us out. All items must be in the original packaging and in new condition.(except the included glass stem which you can keep) You will be required to pay for return shipping to our warehouse.