My sis suggested an underlya 'cause she wishes she had one. i went and looked on the sids for kids website, but all they specified was no lambs wool. But I've decided I'll go without, I'm just not wiling to tempt fate, but I like the sound of the blanket Mary dean was talking about.

You should definetly ring sids, 'cause lots of people might be wondering the same thing and maybe they could list some guidlines somewhere.