Best undergarmet for Neoprene drysuit?

[ndemeis]

I am looking into undergarments for colder weather diving this winter in MA. I was wondering what people recommend for a neoprene dry suit to keep you warm? I have been looking at the 4th element arctic but not sure if it is enough (I am a person that does not get cold easy 50 degrees feels warm to me)

 

[lyonsce]

I have the 4th element Arctic and I am toasty warm in 46 degree water. I also don't get cold easily, so I think they would be perfect. My wife also uses the 4th element and she does get cold easy and she is also warm in 46 degree water....

 

[Frogman82]

Dive in Norway year around in a 2mm compressed neo suit and 4th element arctic undergarment. Perfect combo, couldn't be happier.