This is a discontinued product.
These undersuits , one-piece and unisex, are better suited for neoprene drysuits. They are available in two kinds: Winter and Ice.
Both suits have NO WIND technology, which is a membrane that prevents wind from removing the warm air retained inside the undersuit, while simultaneously ensuring excellent breathability.
The ICE model has a layer of microfleece inside it, a NO WIND membrane in the middle, and a microfleece layer on the outside, making it even warmer.
The WINTER model has a layer of microfleece, a NO WIND membrane, and a mesh weave on the outside that makes it easier to put your drysuit on.