Chillerz Sheets/ Techni-Ice allowed in carry-on luggage?

[chipmonkey]

I thought these were the answer for bringing EBM on board a plane as carry on luggage but after hydrating them am wondering whether airlines don't regard them as fluid too? The gel in them looks kind of liquidy to me! Anyone used them?

why would you take ebm on a plane - or are you not going to be on the plane with your dc?

No, it's a child-free weekend! Part of me thinks I should check it in but I've already booked online check in with Ryanair and I really would prefer to bring the EBM with me as carry on, rather than check it in.
The irony is that if you have the baby with you, there's no restriction but really, if you had the baby with you, you could just bf and have no need for EBM!