There’s nothing like bluebird days for ticking off lines, but clear skies often mean biting cold. The Sentinel Insulated Jacket is made to keep your blood flowing so you never miss a day. It’s built with the same dependable weather protection as our shell jacket but packed with intentionally mapped insulation that’s lighter under the arms . A more contemporary, women’s-specific fit allows for maximum freedom of movement in the burliest terrain, while a 2L GORE-TEX e PE membrane and 100d face fabric provide breathable toughness. What's been updated: We’ve upped the Sentinel Insulated Jacket’s face fabric from 80d to 100d for more toughness and durability, and we’ve shortened hem so it doesn’t hang quite so low, giving it more articulation and a more active fit. The jacket also gets a chest pocket, extra room in the hand pockets, and an integrated goggle wipe.