The other day I happened upon some long-sleeved 100% merino wool t-shirts for £5 each. Although it's been quite warm in the UK lately, I'm normally a bit cold blooded, and my typical "uniform" most of the year includes a cotton/spandex blend type long sleeved
t-shirt. I replace them every fall because they start to get pilled up quite quickly.

I've never had a wool one before -- do they normally hold up well? I bought one and it is not itchy on me at all, so if they are fairly robust I might go back and buy a few in different colors. They are a bit pricier than the ones I usually get, though, so I don't know if it is worth replacing them with wool ones or not.