. Now at West Elm. In black and brown.

 http://www.westelm.com/products/r656/?pkey=crugs-flooring

Trippy :)

There's a Tibetan centre near mine that has that pattern on the floor in the entrance. Ludicrously, I wondered aloud if they used it because of TP. Other way round, surely, my other half quipped.

Good find.  Here's some more.  You have to scroll 2/3 down the page: http://www.houseandhome.com/blogs?page=40 .

Can anyone provide more info on the Tibetan tradition of the chevron pattern?