I am wondering if anyone has tried cutting the EVA Closed Cell Foam Cushions that Whitworths sell for Cockpit seating (984 x 325 x 30)

I will need to cut them to clear the Mainsheet Traveller

I know that they do not absorb water but i was wondering if they are waterproof all the way through or had a waterproof skin over absorbent foam

Any other thoughts on cockpit seating would be appreciated as well

Regards Don

I have cut one up and they are the same inside.