From the Knit Rowan website:
Knit this accessory textured scarf from Designer Knits. A design by Sarah Hatton using the gorgeous yarn Cocoon (merino wool and kid mohair) this design can be knitted as either a straight or looped scarf.
Straight scarf: measures approximately 29 cm (11.5 inches) wide by 178 cm (70 inches) long
Loop scarf: measures approximately 29 cm (11.5 inches) wide by 174 cm (68.5 inches) long
Both Styles Photographed in Tundra 808
7mm needles are listed in the pattern as the equivalent of US 10.5 needles.