This cowl is easy peasy ...
Take any super chunky wool, the colour of your choice - see my Raverly page for yarn choices.
Using size 20mm needles (UK), cast on 15 stitches
(to make this yarn look like Claire's cowl, I would recommend you knit this garment using two strands together - to make it extra thick and chunky).
Knit in garter stitch for 30 rows
Join both ends together using whip stitch and weave in ends.
You are now ready to wear - off to the Highlands you go!
***Notes on how to make this and yarn choices can be found over on my Raverly page here ***