My shop used to close to an acupuncture school and I had loads of acupuncture students always coming in. One told me that the spot on the back of your neck is important for immunity and should always be kept warm - especially in the winter. I think it is the perfect reason to have a gazillion super soft cowls at the ready as winter approaches! This is one of those lovely soft and warm things that will keep you snuggly and happy for ages - the Ultra Light Merino is a dream to wear and work with