received this yesterday, haven't used it out yet, but think it will be useful for discreet feeding, and it is also useful for when feeding and eating myself, prevents crumbs being dropped onto baby as not able to get plate near enough.
However, if I'd been able to have a look at this up close before ordering I would have been appalled at the price, still am, and only not sending it back as I can't actually be bothered as I will use it. Had I seen it I would have made a couple for a fraction of the price, or probably free, as could have used a bit of old material or sheet. It is just a triangle, and could make two from a square of fabric about a metre square. There is a small 'hood' at the 90 degree corner, which you can put the babies bottom into.
For the price I was expecting something far more sophisticated, something which would provide a lot more support. It does enable the babies head to be in a good position if the knot is tied in the right place, but given this is just a knot in the material you may end up fiddling for ages. I wouldn't recommend this to anyone - particularly if they have access to a sewing machine!!