I've come across these for sale and was thinking of getting one for my 6 week old DS. The one I've seen is the Summer Infant 'wedge' which raises the baby up at the head end, helping with reflux and digestion problems. I don't think DS has reflux but is a noisy sleeper with sometimes quite 'fluidy' sounding breathing and gets colic and hiccups. He's not keen on being laid flat which is what made me think a wedge would help. Then I came across an article from 2010 claiming such positioners were dangerous and that babies had suffocated in the US when using them! The product was recalled, but I don't know what happened after that as they are widely available now.
Has anyone used or is using one of these? Are they any good? And are they safe?!