5oz is very thin (think of nuumeds everyday numnah). At the
other end of the scale a polypad is (I think) a 12oz. Hopefully that
Will give you a feel of what a 9oz would be like. Hard to describe!
A little bit fluffier. The cotton outer is thicker too. The 5oz one has a honeycombe cotton outer and the 9oz has a swirly pattern and you can def tell the difference. Have a look on their site, they have pictures and I think descriptions. Really nice!