That stuff is cool. There's a video floating around of a guy wearing one of those beanies having someone hit him over the head with a shovel. Hopefully we'll see that stuff in some motorcycle gear soon.
For somebody who already has well over $150,000 invested in ICU costs of traumatic brain injury because of a single racing event, I'd say almost any price would be cheap.
Problem is liability associated with ANY new material.
I think it'd be best utilized in bike gear in the form of elbow/knee/shoulder/back pads. More comfortable than hard armor, but just as tough in a crash. Probably not much use in a helmet.
Slaughter - right there with ya. TBI sucks...hope I never do *that* again...although, the Ti legs aren't much fun either. But at least I can tell if the weatherman is right lol.
Jaimec, temperfoam, or memory foam, gets it's properties from the air bubbles residing inside it. As you squeeze it the air slowly leaks out of pores. Squeezing it fast, it feels harder because the air inside simply can't escape fast enough. The denser the foam, the more difficult it is for the air to escape.
This newer material is solid, and operates at the molecular level.
The physical difference between this d3o material and that of the old Aerostich Temperfoam is very little. They both seek out to do the same thing as far as the user is concerned.
I have no experience with either, but I'd imagine it makes no difference to the end user whether the material reacts mechanically or chemically to impact.
All that said, I would guess the the d3o is likely more solid during fast impact than the Aero foam would be.