This is my first mouth guard for sport that I have ever bought. I think it is pretty decent, quite soft inside and easy to mould. It is a lot bulkier than what I imagine you would get from a custom mould from your dentist but for less than £20, I don't think you can complain. I don't remember it tasting bad, I have used it 4 or 5 times now and it doesn't taste of plastic at all. Comes with a handy little box.