Icebreaker BodyFit 150 Legging w/Fly - Men's

I'm very happy with these leggings (everything Icebreaker that I own actually). When I got them, I didn't want something super thick since I tend to stay pretty warm, I've worn these under shorts, and pants to around 40 degrees, and they are great for those temps. I've got size medium, and am 6'2", 175lb. They don't smell or itch - very satisfied with the product.

These pants are great for skiing because the merino wool is super soft, warm, and non-smelly. If you have heavier ski pants, then these should be perfect in keeping you from overheating. Be warned though, if you have more a technical shell type of ski pant, then you might want the heavier 260 icebreaker for winter.

It's an Icebreaker, it's warm, it's cheap, there's really no downside here.

I needed some lightweight n2s legging, primarily for riding my road bike in chilly Utah springs. These guys have worked great. Of greatest importance, there are not a lot of seams - actually, any that I've noticed - that cause me grief beneath my riding shorts.
I haven't worn them day-after-day-after day, so I couldn't say anything about odor issues. My wife (or I) did make the mistake of drying them once, but I didn't really see any shrinkage. I haven't experienced a single instance of them itching me at any sensitive locales.
I am 6'0" / 195 lbs and got the XL.
I am very happy with every little piece of IceBreaker gear I own. (And particularly the socks!!! How about a better selection of IceBreaker socks, Backcountry - I love IceBreaker socks, and I love buying them from you guys....)

I tested this on a one week trip in the BWCAW in September. Temps dropped down into 40's at night, and some of our days were wet, windy, and in the 50s. These kept me warm under convertible pants (and rain pants, when necessary). I actually would have like "capri-style" pants better for canoeing, since I hop out in ankle-deep water in stead of running my boat aground. I just rolled the ankles on these up, though, and they worked. The wool is really soft and comfortable, and they were great in the evenings when the temps dipped. They seem well made and durable as a base layer. The only gripe I had is that they were prone to slipping down in back for me. Not a deal breaker though. I would buy them again.

The IB 150 legging with fly is true to size, the medium fits me perfectly, (30" waist, 34" inseam, 165 lbs, 6'1" tall) and the fabric is soft but highly durable. It keeps me warm in spring 50-60' (haven't tried it in the summer yet), is breathable and doesn't retain odour. It was exactly what I was looking for and Backcountry delivered it with their thoroughly prompt and friendly service.

Worn for two weeks killing in the Chugach range of AK. Ankles got a little loose but no smell and warm as hell.