I thought that as Knit Picks is new to the UK, a little explanation and information about some of the yarns might be a good idea. So, I'll start with the Wool of the Andes. Knit Picks offer this yarn in a worsted weight, a bulky weight with solid colours and these lovely hand dyed yarns.
The yarn is 100% Peruvian Highland Wool. I'll be honest, I was expecting this to be a bit stratchy and hard. I was very pleasantly surprised to find that it is extremely soft and easy to handle. This hand dyed version is very, very pretty and the colours blend extremely well. The solid colours match the hand dyed and so can be used together. I think these yarns will be perfect for hats, mittens and because of its excellent felting qualities, for bags, and anything else you might like to felt. (You can tell that felting isn't something I'm particularly familiar with).
The suggested tension for this yarn is 3 - 3.75 sts per inch on 6 - 8mm needles, so it should knit up to most chunky type patterns. Knit Picks have a wide range of patterns on their website that you can either buy as a download, often for low prices such as $1.99, or, even better, for free.
I am considering making some hats for Christmas presents out of this. My nephew, aged 6 would love the Rolling Hills colour which looks like a camouflage colouring. He is very keen on Toy Story at the moment and so this would be great.
My niece (aged 8) would of course like the Galaxy colour way as it is the closest we have to pink and purple which are about the only colours she recognises.