Odd... Mainlink is now called Mainlink XL on oakley.com. Still has the same SKU (OO9264).
No word on an XL release of the Mainlink to my knowledge!? Will report back if I get a confirm on this, v interesting.....
Google Search seems to have crawled the AU site while Mainlink XL was the page title, however title reverted to Mainlink now... I would lean towards a web-dev error on this personally...
Seems to be recurring in different parts of page, I would say its being worked on as we speak