I just received the Bastion Hoodie yesterday and was impressed the moment I put it on. Thanks to the new Polartec Power Fill insulation, the jacket retains all the warmth without all the bulk of traditional winter jackets. I wouldn’t say the jacket is an athletic fit, but there is no unnecessary bulk anywhere.

More on the new Polartec Power Fill From the Triple Aught Design website

The Bastion Hoodie provides key fortification against frigid weather, allowing you to go further and stay longer.

Made in the USA and insulated with Polartec® Power Fill™, Bastion evolves the classic belay jacket, maximizing heat retention with less bulk and weight. Stowed into its hunter’s pocket until needed, Bastion provides instant shelter when the mercury drops. Power Fill’s less-bulky insulation means that Bastion will layer more comfortably under a shell in cold, wet weather, and take up less room in your pack than other synthetic insulation.