neoprene drysuit fit

I've got a guestion. I bought a Bayley Dry Suit for my fiancee and now we have a concern that it may be to small. It looks ok on her but she has trouble lifting her arms above her head. She can do it but the suit stretches with her. We believe that the suit is alright for now and may get a different one in the future. The question is.

How should a neoprene suit fit?

A neoprene suit should be a fair amount looser than a wetsuit; there should be enough room to add a few layers of undies should the need arise.

Has your fiancee used it in the water yet or was this just trying it on at home? I found that my new suit felt a bit cumbersome trying it on but it was fine in the water. When I lifted my arms, I felt the zip a bit across my back but wasn't aware of it at all in the water.

Fit needs to be snug but not too snug that you can't put stuff on underneath. Not skin tight.

Right, it needs a little room inside but can be a lot snugger overall than a tri-lam.

The important thing in any drysuit is to be able to easily bend over far enough to remove you fins, and have full range of motion. If a trilam is too short in the torso you are pretty much screwed as it will get tight in the butt long before you can reach a fin and it is a bit of a saftey risk to use the suit.

With a neoprene dry suit you can tolerate a snugger and more streamlined fit because the suit will stretch. They tend to feel a little more confining out of the water but usually feel less bulky and more streamlined in the water. I can't get my wife to switch from a neoprene drysuit.

You also have a grat deal of insulation in the suit itself and can get by with much lighter and thinner underwear. My spouse dives in sweats only in 45-60 degree water and stays warmer than if she is in a trilam with one piece 400g thinsulate underwear.