The one I have is called Pregnancy Journal - a week-by-week guide to a happy, healthy pregnancy by Paula Spencer.

It's green and yellow elastic bound. With a spiral binding which I like. Its about the side of your standard business desk diary. It has plenty of space to write in and also some information too.

I bought mine when I got pregnant but didn't get the chance to use it so I can't really say what its like to use yet. But it does look nice.