He does say:
"Running with Ultra at MacRitchie trail, I do not feel so worry because of the puncture resistant sole so that makes my focus more on my running style and tempo."
This isn't correct, unfortunately. The puncture-proof part of the Ultra is the sock, for maximum protection you need to wear both the sock and the outer.
Apparently he got these from a store in Singapore.
P.S.: Here's a longer review (from the store above). Thanks to Mowgli.
"I switch the treadmill to 18kph for the last 250meters of my run... the Ultras can fly if you want it to."
I can't wait.
P.S. Now I don't have to. I got a pair, here are my first impressions.