I returned these during the 30 day trial period following the instructions to send them back. No refund ever showed up. When I called them, they said I needed a return authorization number before returning them, but the paperwork that came with the insoles made no mention of any requirement to do this, nor does their website. They refused to refund my money. I wish I had checked the complaints on the web before ordering, I would have seen they are scam artists. read full review »