Believe it or not, this is not sisal. It's Coco Ceramic Tile.
Coco Ceramic Tile is imported from Italy and available at Style Bath & Kitchen. It's available in two colors, Coco Beige, which has the color striations of natural woven rugs, and Coco Tortora, which is a bit darker, with a color reminiscent of a cafe au lait. The woven texture results in a warm organic feel.
A tile is approximately 24"x24", and sells for $37.40.