Bad customer service and don't give important information that you need, Could care less if you have to return the product. They sent me a product that did not have an adjustable frame and the frame was too big, yet when I purchased it, they said nothing about frame size. They didn't mention there were three different frame sizes. They sent the medium frame without asking. I spent a few nights trying to make ti work, while my health was being compromised then finally realized the frame would not fit. They never gave me an option or told me that the frame size they sent, medium, may not be the right size and that I may need a different size. They sent it without a word. When I called about it, they said that the manufacturer doesn't provide instructions for sizing the frame, however, it would be easy to measure the head to figure it out, but they are too lazy to do it. Just send something that is a shot in the dark for the customer with no explanation? Wrong. They don't care what trouble you have to go through. And don't provide a credit or make it right in some way.