Thanks to Anja, my clothing system is complete. She managed to get a hold of some of this seasons new, and i think best yet, Icebreaker range. For those in the dark, Icebreaker make fantastic quality merino wool clothing of all types, weights, uses and sizes. In combination - especially when the wiff factor is so low - these pieces allow you to stay, warmer, drier, cooler, for longer with less muss, fuss and weight. Downside? well its not cheap, and it doesnt have the latest en vogue team print.
So: mid weight, 260g balaclava. Can be rolled into a hat, will be used on the coldest winter days.
Expedition weight 340g hooded, slim fit top. Riding in if cold, used in sleeping bag so a 3 season bag gains a few degrees of rating.
Thin, breathable 180g short sleeve top. For the warmer days, and as inner layer.
Combined with 3/4 wool underwear for night time, i think i have the clothes dialled..