Not sure if many of you guys know about this stuff, so I thought I'd let you all know. This stuff is called Ultratouch, and it is an evironmentally friendly cotton insulation made from 85% recycled denim. Acoustically, 3.5 inches of this stuff is equivelant to 4 inches of OC 703. At 125Hz it has an NRC of .97, and from 250Hz upwards its NRC is above 1.0. Also, this stuff is completely safe - it contains no dangerous fibers or particles and causes absolutley NO skin irritation whatsoever. It is 100% percent safe.
Not enough you say? Well, each natural fiber of UltraTouch is saturated with a natural fire retardant (borates) giving UltraTouch insulation a Class-A fire rating. UltraTouch also contains active mold inhibitors and acts as an excellent pest, mold and mildew inhibitor.
You can check this stuff out here:
UltraTouch
And here is a place you can order the stuff:
UltraTouch Prices
I have no idea what shipping would be like on this stuff, but if you go to the Bonded Logic website and click "Find a Distributor", just follow the instructions and you should be able to find a supplier in your area.
Just giving ya'll a heads up!
EDIT: Forgot to mention, in the prices link that I gave, the R-13 is a 3.5" thickness, and the R-19 is a 5.5" thickness.