I emailed the company to ask for the weight and how that material compares to cuben and here's what they said:
"The Minimal Backpack weighs about 5.5 ounces and is made from the CTF3 line from Cubic Tech. Cuben Fiber is what they call their sailcloth line."
$pendy for sure, but looks sweet..
Details here: http://shop.outlier.cc/shop/retail/minimalbackpack.html#fragment-3