It's the air spaces that insulate you. That's why you get colder when diving deeper even at the same water temp. The stuff compresses as you go deeper. Pre crushed? Sounds like it would just even out the experience at any depth. I for one don't mind being warmer as I ascend. Beside my old wetsuit it permanetly crushed now. HMMMM.......mabey you'd like to buy it. It's precrushed
