Originally Posted By: hikermor
Closed cell foam is pretty much closed cell foam. There are varieties,(Z-rest comes to mind) out there that have some advantages, but the basic blue ones will do the job. With a little duct tape, they can also be fashioned into decent cervical collars and splints.


Closed cell foam does come is lots of quality levels. The cheap ones generally gets flat by use fairly quickly. The expedition grade EVA pads lasts a lot longer.
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