Does what you expect
"I bought a pair to do an Outward Bound course, and they certainly kept me warm when we did water activities! I just had a bit of trouble with the fit. They are unisex shaped, so as a tall woman with some junk-in-my-trunk I found that even the larger sizes were far to short in the leg and were fitted more for "packages" in the front, than in the back meaning I had to keep pulling up the rear. I'll keep them, and will wear them again, but maybe not for tramping. Best to actually try them on if you are shaped more like me."