oh that is great. i think that is the stuff we are looking at as well. it is about 50mm thickness. and the green foam as well! we have a hard baord in the bottom of the bassinet as well. That is really helpful bloom, thanks for writing back. I would have spent the more money if i needed to but i figure the little guy wont be in the bassinett tooo long so dont want to spend heaps on it! Ill have a look at target for Mattress protectors - hopefully i can get one that fits.