[BigDee]

Before I got my NB, I used to use bowls from the kitchen. One pair measures about 18 cm in diameter, with a volume of 1655 ml (7 cups), I can't remember what their depth was, nowhere near 18 cm though. I was able to completely remove the air from them. (Pictures are posted in the pictures section of the male part of the board.) Use of the bowls was short-lived, due to the discomfort caused by the narrow rims digging into my chest.

So, I don't think I would have any problems using the XXL's. Although I do like the comfort and sealing afforded by the contoured rims of the CL's.

Big Dave