Here is my pick of the six best ethical hats which will keep you warm this winter. The first three are favourites from Pachacuti's AW10 range and the remainder are my pick of other ethical fashion brands. http://www.guardian.co.uk/lifeandstyle/gallery/2009/dec/14/ethical-winter-hats
I love alpaca for a winter hat keeps you warm and cosy but is also lightweight. One of the best reasons for buying alpaca is that it continues to look great for years to come as it contains natural resins which prevent the fibres from ageing.
The felt fedora is a great choice for a winter hat as it is naturally water-repellent and is great for this drizzly winter weather - no need to have to remember an umbrella every day, just wear your fedora with style!