If you are not 100% satisfied with your purchase from Zen Water Systems, you can return unused and unworn items in their original packaging for a full refund minus shipping costs. You must return your items within a certain number of days to receive your refund. Returns received after a certain number of days will be subject to Zen Water Systems's discretion. If you purchased during one of the Zen Water Systems’s promos, your refund equates to what you paid and not what the product is selling for now.