I have sold vast amounts of Icebreaker in my stores over the last few years, the wool is sourced from some very isolated stations in the south island and is chosen for its unmatched quality, the wool is not contaminated by burrs,(as most Oz wool is) and to be honest the quality control is some of the best I've ever come across in the outdoor gear market. The Superfine rnge is truly miracle clothing, one of our lads from the store wore his in 42 degree heat in singapore and reckoned he was comfortable. I use a 260 techtop as a base layer when boarding with just my jacket over the top, its the best combination of layering i've found over 20 years of wintersports.