OK ladies, I have read and read your posts and am amazed at how many items you all have and how you sing the praises of wool. I must confess-The ONLY items I own are wool socks. Don't ban me please! I just went to a website and put 3 items into a shopping cart. BUT before I order. I need to ask a question. The items say that they are a base layer item, all 1/4 zip top. I thought I wanted to wear something like underarmor next to me then this top. I am under the impression that this is a no go correct? I use this wool as my baselayer and then what do I put over that (see below first)? If they are a base layer, how heavy are they? I am in the wool-less club here. I am looking at these items for x-c skiing, walking, and perhaps snowshoeing. I usually wear a heavy biking jersey and a soft shell jacket for walking/x-c skiing and find it okay and haven't had any problems. Would I use the wool top instead of my biking jersey? I have read the advantages, I just need to be sold now. i know- too many questions.