I discovered Swytch in May 2020 and placed a pre-order. You may read several disgruntled reviewers complaining about the time it took for their orders to arrive. I'm not going to do that, it is 2020 and probably the most disrupted year anyone has experienced, so I cut them some slack and waited for the eventual delivery. Their website kept us up to date regarding progress of the order and then slit into specific updates for each batch. Couldn't ask for more than that. So enough about delivery time, because when it did arrive, boy was it worth the wait. Like many others I'm getting on a bit and where cycling was fun it started to hurt in strong head winds and riding up inclines. I'd bought my Trek hybrid following a heart by-pass to help me back to full fitness and for enjoyable exercise, but when the enjoyment started to fade after twenty years or so I thought my cycling days were over. Then I saw the promotional videos for Swytch and decided it was worth a try. A couple of hours following the simple instructions and, with a couple of easily overcome challenges my Trek had become everything Swytch promises. It is simply a brilliant product. Regrets? Yes, I should have done it sooner. 6 stars.