Bought for a ski trip, planned for fishing and hunting. The material doesn't retain heat as well as other thermals so I was a bit disappointed with them initially. The big problem, however, is that they are very, very long. I'm 5ft 10" and about 185 and ordered a large. I think I should have ordered a medium size as these pieces fit a 6ft 6 person comfortably. When I wrap the leg cuffs around my ankles, I can pull the waist belt up over my nipples. I thought it wouldn't make a huge difference, but now when I wear them I end up with a ridiculous amount of excess material in my crotch, which ends up irritating me. In general they are suitable as a base layer in moderate temperatures if you are tall or order the right size.