Went down to Midwest Marina in Andover they had a couple of suits. Tried them on. They are extremely well constructed and very warm. I doubt you would have to wear anything under them(That could be scary as Hell) plus the fact they keep you a float if you fall in. In my opinion seems worth the money. The IDI site has some on sale right now they are green and yellow, Green Bay packer colors but to save 114 buck I would almost wear pink.