There's no need to sacrifice waterproofing for mobility and breathability with the Outdoor Research Hemispheres II Jacket. The GORE-TEX C-Knit 3-layer shell is lightweight and breathable while the GORE-TEX 2-layer panels with Stretch Technology add movement-mirroring stretch. Moreover, it's fully waterproof, so when we're skiing powder up to our chest we don't have to worry about moisture permeating into our layers.