Fast delivery and the wool duvet really helped me stop having night sweats. I'd like to know the precise science behind why wool is (a) breathable (able to let water vapour pass through), (b) able to wick away moisture (IE, absorb and then release liquid water), and (c) able to change the rate of heat transfer in response to temperature differentials (IE, have a range of tog rating). I'd also like to know why you claim that the organic luxury duvet range is more breathable than the classic range: why is alpaca wool better in this regard? By the way, the youtube video here is no longer available: https://www.thewoolroom.com/blog/dr-christian-jessen-talks-about-dust-mites/