hudson
Contributor
The nice thing about the single layer is it's totally unrestrictive. I just didn't want to risk being cold at 42F and went for the 3-layer, even though it's really really warm. If the water was more like 45-50F I'd have gone for the single layer for sure. Definitely go one size smaller, especially if you aren't packing much around the middle.
But again I think under a trilam the 3-layer should be completely fine.
But again I think under a trilam the 3-layer should be completely fine.