Bec very similar only it's a towel twisted and then made into a ring and taped together.. It is used for the same reason you mentioned because Ronan had an egg head and the sides were dinted in so after using the "ring" for 2 months he has a perfect shaped head and barely ever tilts to the side when sleeping..

Tiggy - Enjoy your sleep darl!

Simone - I know what you mean about people asking about how old they are and being shocked.. It's funny seeing people's faces when i say "He's technically 4 1/2 months old but he's classed as 7 weeks old due to being born 13 weeks early" hehehe