This gaberdine wool has been sourced from an environmentally certified Japanese supplier, renowned for creating an exceptionally fine weave. The people behind this company believe in being gentle and warm - towards people and the planet. We couldn't agree with them more. This wool is tropical, meaning it will keep you cool when it's warm and warm when it's cool. The best thing about this fabric is that the black stays black forever, so you can keep adding to your classic collection, knowing the pieces will always match.