They sign you up for automatic renewal and don't tell you. You are supposed to somehow know without them ever telling you that fact and choose to opt out. Charged me for a six month auto renewal with no warning and once I realized what happened I tried to cancel it the same day I was notified of the auto renewal charge. They refused to refund me the over $200 they charged me with no warning despite the fact that none of the boxes had been shipped yet. They wouldn't even cancel it for the following month and refund me for the five remaining months. Total rip off, terrible customer service, and dishonest business practices.