It's knitted with Rowan Fine Tweed, a lovely 4 ply wool. I used a total eleven different colours and I'm so pleased with the way the colours and patterns work together.
I had a bit of trouble with the sleeve head and had to reknit it. The finished sleeve head is quite full and gives the finished article a feel of the 1940s - I like it!
The only thing I'm not 100% happy with is the neckline. I like a low neckline but this one has turned out quite wide as well. I think if I was reknitting it I would reduce the width of the neck across the back and maybe not pick up so many stitches around the neck - but so what, I still love the cardigan, and knitting the Fair Isle pattern was great fun.
In view of the issues with the neckline, I won't be publishing this pattern, but I will be tinkering and I'll create something along the same lines shortly - I reckon you can never have enough Fair Isle cardigans.
Details of the colours used can be found on my Ravelry page, here.