Helly Hansen Thrym
Credit: Photograph by Victor Prado

It may shrink your bank account, but no jacket on the market regulates heat as well as the Thrym. The PrimaLoft insulated shell is equipped with body-mapped pods of goose down on the interior that retain warmth without adding bulk. Unzip the jacket's ducts and those pods help push out heat. Its four-way stretch holds up to all the rigors of lift skiing without limiting movement. [$900; hellyhansen.com]